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What is Fuzzing and How Did It Find 26 USB Bugs?

Fuzzing is a method of testing with automated software which provides invalid, unexpected, and random data as inputs to a computer program. The testing program then monitors for crashes, assertions and potential memory leaks.

A research team based from Purdue University came up with USBFuzz, which pushes enormous amounts of random data through the USB bus of a system. Hui Peng and Mathias payer (from the Swiss Federal Institute of Tech) came up with the idea and program.

Please don’t lose any sleep over the bugs found.

Peng and Mathias found one bug in FreeBSD, three in MacOS (two resulting in an unplanned reboot and one freezing the system), four in Windows 8 and Windows 10 (resulting in Blue Screens of Death) and the vast majority of bugs, in Linux — 18 in total.

Of all these bugs, Windows users do not need to worry, they have been fixed. Of the 18 found in Linux, 16 of them have been corrected already. Those correct where major security flaws.

What we like about the USBFuzz is the underlying theme to improve the security of the USB platform and continued improvement. We also like USBFuzz becoming an open source bit of code that everyone may use to strengthen thier USB product. The team will release a version on GitHub later this year, 2020.

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Single Atom Transistor Recipe Sets The Stage For Quantum Computers

Some really smart researchers at the National Institute of Standards and Technology (NIST) and some of their colleagues at the University of Maryland developed a step-by-step recipe to produce the atomic-scale devices. Atomic scaled devices is the heart of quantum computing. Said in a very simple way; “quantum” is the Latin word for “amount” and is the smallest possible physical unit which has energy (or matter).

These really smart scientists demonstrated they could precisely control the flow of electrons through a really small physical gap or electrical barrier, known as a transistor. The hard thing is controlling the flow of energey (electrons) through stuff that is really, really small, like an atom. What the team came up with, is a reciepe to create atoms that could be controlled with electrons.

In really simple terms, this is the recipe:

The team used a known technique in which a silicon chip is covered with a layer of hydrogen atoms, which readily bind to silicon.

Used a fine tip, like really fine tip, scanning microscope and removed hydrogen atoms at selected parts of the silicon.

What was left is a hydrogen barrier with only certain parts removed from the scanning device (above).

Next, the team directed some phosphine gas at the silicone and the gas covered the hydrogen atoms but leaked through where hydrogen atoms had been removed.

As the last step, the smart guys heated the silicone which created a reaction. The reaction created a foundation of a series of highly stable, single atom devices that act like a quibit… or bit.

This is all a bit overwhelming to understand so the below video will help. The exciting thing is a repeatable process has been defined to make a single quantum unit programmable. Translated into day-to-day applications, there is great hope we will all get computers 100x more powerful than today’s in about the size of an Apple watch.

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Review: Windows 10 Computer Stick

In 2015 Intel introduced the Compute Stick or Computer Stick – the product has been around ever since. The idea is simple and eligant. Intel wanted to create an HDMI dongle computer which can run Windows 10.

There is no confirmation, but our suspicion is that Intel wanted a ultra-cheap and portable solution to run Windows for embedded applications like set-top boxes (DVRs) and other IoT (Internet of Things) products. If our assumption is correct, it’s a wonderful product and is a great solution for its intended purpose.

PCWorld did a fantastic review of the compute stick back in 2016, and a link to that article is at the footer of this post. The PC World review outlined the specifications and performance levels of the Intel based product. We will let that article do the heavy lifting for the tech people out there, but today we want to talk about the applications one might have for a computer stick.

For only $120 (ish) off Amazon, this is an excellent solution to run Windows 10 for a host of specific applications.

computer stick

Several quick talking points before we move to examples of usage out in the field:

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Why Does the Partition Size Matter Inside an Image File?

This topic is brought up today because we hear some Users have issues understanding this point. The partition size inside an image file does matter. The question we will answer today is why it matters.

Let us start off with two simplified overviews. First, all storage devices use a partition to define it’s characteristics. A storage device has a file system, like FAT32 or exFAT or NTFS and that file system has a defined size or digital capacity. These characteristics, and some others, are laid out in the partition.

Second, an image file is the above partition with all its detail, the file system, defined capacity along with all the actual files and folders on that partition and put into a single file or .img file.

For a non-technical person, let me use a puzzle as an example.

partition table, puzzle, image file

  • The puzzle box is equivalent to the physical device.
  • The plastic bag inside the puzzle box, holding all the pieces, is the image file.
  • Print on the puzzle box indicating the number of pieces, is the partition.
  • The puzzle pieces inside the box are equivalent to the data.

Okay, so at this point we know the image file (.img) is the bag which holds all the puzzle pieces and the data are all the bits inside the bag. So let’s address the question of this post, “Why does the partition size matter inside an image file?”

Back to the puzzle box. As with any puzzle, the outside of the box lists the number of pieces. In this example, we can use the number of pieces printed on the outside of the box as the partition table size. If the physical box size is, let us say, 8″ x 11″ then it’s totally logical that a 1,000 piece puzzle would fit inside. In fact, it is logical to say even a 20 piece puzzle will fit inside the box. But, could a 5,000 piece puzzle fit inside this box?

From the three scenarios above, one doesn’t work, right? The scenario where the box says there are 5,000 puzzle pieces in a box that is physically to small.

Partitions are the same.

The situation which doesn’t work, is when the print on the outside of the puzzle is telling you the number of pieces inside the box are clearly more than what the physical box can handle.

Said another way, you cannot use a partition table size of 4GBs and try to have the image file fit on a USB stick that has only 1GB of storage space. Even if the image file itself is only 1GB large of actual data. Just like the puzzle, no matter what is printed on the outside of the box, if the number of pieces are larger than what can fit inside the box… it just doesn’t work.

Here is a real-world example: You can download this IMG file which is only 40MB large. The IMG itself has a 4GB partition inside it. As long as you write out the IMG file to a flash drive that is 4GBs or larger, everything will work. If you try and write out the IMG file to something smaller, like a 2GB stick, it won’t work.

What happens?

Windows is very smart. All versions of Windows (from 7 and higher) will take a look at the total available memory and compare that to the partition table size. If Windows sees the partition table is larger than the available memory of the device, she won’t let you do anything with the device… other than format it. Once the drive is formatted, Windows will automatically rewrite the partition table to fit the amount of available memory. In this example, Windows would format the drive to become a 2GB stick… not a 4GB stick.

Why does Windows do this?

They want to eliminate fraud. Windows 7 was introduced in 2009 and before that, the only OS was WindowsXP. Well, Windows XP didn’t have the capability to compare partition tables to available memory. The result was fraud. Many would sell some larger GB capacity drive… like at the time 32GB, but only 4GB of real, usable, memory was there. The user would run out of memory space long before the “printed capacity” of the drive was reached.

If you found this article; maybe there is a situation where an image file is not working when written out to a USB flash drive? If this is the case, be sure to check your partition table compared to the amount of physical memory available. The easiest way to check, would be mounting the IMG file on your computer and check Properties for the partition size. Keep in mind, the default “Mount” command in Windows doesn’t work. You need something like this.

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How To Format a Flash Drive as UDF (Windows 7 & 10 Solution)

When trying to format a flash drive in Windows (7 or 10) you will see the file system options best suited for the device. The proper file systems for a flash drive would be: FAT, FAT32 or exFAT. Windows will also list NTFS for a flash drive, but not the best for a USB stick, as mentioned before. The file system types listed by the Windows GUI (Graphical User Interface) will depend on the GB capacity of the flash drive connected.

So why no UDF file system on the list?

First, let me say it IS possible for Windows to format a flash drive as UDF (Universal Disk Format). Microsoft just doesn’t want you to do it; and there are good reasons why.

Before the reasons given for not using UDF as a format on flash drives, let’s clear one thing up: If you think formatting a flash drive as UDF will make the thumb drive appear as an optical drive in the computer – you are mistaken!

From the Wikipedia page about Universal Disk Format, UDF, the specification is governed by the Optical Storage Technology Association and because of that, many believe a UDF anything will work like a disc. It, UDF, is most widely used for DVDs and newer optical disc formats, can be used on flash drives, but does make it operate like one.

If we take out the hope of formatting a USB with a UDF file system, some may feel the Universal Disk Format means the flash drive will work in anything, such as from Windows, to Mac, to Linux, Symbian and/or to proprietary system. The truth here is exFAT will do just the same. Please keep that in mind.

So why not format a USB as UDF in Windows? Here is a list:

  • The lack of fully-functional filesystem check tools.
  • 64GB limit with Windows & Linux, a bug, not a limit of UDF
  • SD and USB mass storage devices are exposed to quick wear-leveling failure
  • UDF is read-only for Windows XP

Without bogging down this post with ultra-technical information, from the above list, the most important to consider is the first, lack of filesystem check tools.

This means if the USB is pulled out while in operation and a bit is affected by the action, there are no tools to check the file system for errors. You are flying the dark as to why the USB no longer works and there are no tools available to help you figure it out. Given the flash drive was specifically designed to be portable and quick access, the above action is most certainly going to happen sooner or later, which makes UDF a high risk file system.

How to format a flash drive as UDF:

Connect the USB to your computer and note the assigned drive letter

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Does Erasing Flash Memory Shorten It’s Life?

Yes. Performing an Erase or “full format” shortens the life of the device. The erase function is also very slow.

Here are some additional questions based on the answer above which we will address in today’s post:

Is “erase” and “format” the same thing?

Erasing flash memory (a.k.a. Setting all bits to 0, also called a “full format” by Windows) does more damage. Flash memory has a limited number of times that it can be written, and the more you write to it, the more it degrades. With an erase function, you’re writing to the entire device.

With a format, all that’s happening is changing a few bits at the front of the device to say the rest of the memory space on the flash drive is available to be overwritten. This saves the life of the flash memory because the old data is not being overwritten, just flagged to do it at a later time.

Why would you need to erase a drive?

Since a format is changing just a few bits at the front of the device, it means all the data is still on the drive. The few bits we are talking about which are changed, is related to the file allocation table. The changed bits in the file allocation table, mean there are no longer instructions about the location of the digital files. Recovery software can scan the memory space and retrieve those files even though the file allocation table isn’t giving instructions on where they are located.

Think of the file allocation table as the table of contents of a book. If you tear out the table of contents of a book, but all the pages of the story are still there, it’s the same concept as formatting a device. Sure you can scan the pages to find chapter 12 with the part about Paul getting a bucket of water, it’s just hard. Same thing with formatting a drive, you can use recovery scanning software to find the files, but it’s hard. Coming back to the original question, why would someone want to erase a USB flash drive? One possible reason could be a security risk of some kind and the operator wants to insure no data is on the drive. For example, you are donating a flash drive and you had financial or medical records on the drive. By performing an erase, that data cannot be recovered.

Why does an erase take longer?

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Three Options For Recycling Flash Drives

The last two decades have ushered in an enormous number of electronics. Prices get lower, users upgrade, society reapes the benefits of these advancements. This explosive growth in electronics has led to an escalating burst for EOL (end-of-life) electronics and e-waste. When electronic devices are left in traditional landfills toxic materials can be released into the soil and environment.

With new cheap devices, society has reaped tremendous benefits. This explosive growth in the electronics industry, however, has led to a rapidly escalating issue of end-of-life (EOL) electronics or e-waste. In landfills or primitive recycling operations, toxic materials can be released from old electronic devices into the environment.

E-waste is growing, and with that surge comes the need for effective electronics recycling programs. As of 2018, e-waste is now the fastest-growing waste stream in the world, with an estimated waste stream of 48.5 million tonnes in 2018, valued at 62.5 billion US Dollars.

The amount of e-wast from USB flash drives is unknown from the above statistics, yet it’s not entirely necessary to make flash drives part of the e-waste equation. There are options for recycling USB flash drives.

Option One:

Run antivirus software from a USB flash drive.

If your computer is infected with malware, running an antivirus within Windows may not be enough to remove it. If your computer has a rootkit, the malware may be able to hide itself from the antivirus software. The only proven way to ride your system of a nasty virus would be starting your computer from outside the Windows environment and start the cleaning process from there.

This is where bootable antivirus solutions come in. They can clean malware from outside the infected Windows system, so the malware won’t be running and interfering with the clean-up process. The HowToGeek website did a nice write-up on this topic. If this is a tool you need, don’t e-waste your USB flash drive, rather make a bootable antivirus software stick.

Option Two:

Run Linux from a USB flash drive.

As of 2020 the percentage of Windows computer users is still an impressive 88%. Mac users are 10% and Linux users are the remaining 2%. Have you ever used Linux? It’s actually a fantastic operating system and at least something to play around with if you have spare USB media. Rather than e-cycling your USB stick, you can download a Linux operating system and give it a run. The process is not difficult and (nearly) any non-technical person can download and install Linux on a flash drive.

Slax is a well know Linux package. The instructions for download and installation are straight forward and simple. It is highly recommended to try this version of Linux as your first exposure to the operating system.

Several benefits of running Linux from a USB include trying the operating system without investing money in new hardware, or making changes to your current Windows operating system.

Learning to run Linux from a flash drive will give you an advantage in the event of a computer failure. For example, a computer gets bogged down with a nasty virus and you need to access some files quickly. There is no time for a lengthy cleaning process (scanning a hard drive can take hours). Booting into Linux from a USB stick will give you access to the memory of the hard drive to access the files you need.

Option Three:

Recycle USB drives for a good cause. “One man’s garbage is another man’s treasure.”

Isn’t that how the saying goes? Said another way, you can donate your USB drives to an organization who can re-purpose those drives and provide them to others in need. Pivoting from option number two, a non-profit organization called SugarLabs.org puts a Linux based operating system on a flash drive. The operating system is a special version of Linux and is designed to teach young kids how computers work. The not for profit organization sends these donated drives all over the world. SugarLabs is based in Boston Massachusetts and founded by Walter Bender a graduate of Harvard and technology researcher from MIT Media Labs.

Part of the SugarLabs process is insuring each USB drive is clean from any personal data or potentially harmful malware. RecycleUSB.com is a website and business which manages the sanitizing and cleaning of the donated USB flash drives before sending to Walter and his team at SugarLabs. The recycle USB website lists the “how to” steps on donating media, contact information for any questions someone might have and sanitizing steps used to clear data from the flash drives. The partnership between RecycleUSB and SugarLabs started back in December of 2009 when flash drives began having the storage capacity to hold a portable operating system (about 2GBs).

After reading the above options for recycling USB flash memory and you find yourself still wanting to e-waste the flash drives, be sure to check your community or city about e-waste programs. In nearly all cities and counties it is not recommended to throw away electronics into the standard garbage service. Be sure to enlist the use of recyclers who are certified through either of the voluntary certification programs that have been established to ensure responsible recycling, including R2/RIOS and e-stewards.

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Off Topic: Making Home Brew Starbucks Vanilla Latte – Life Changer

DIY recipes are beloved for many reasons; saving money, saving time and the rewarding task of simply doing it yourself. Today is a post that is clearly off topic from the normal USB hacks and news we typically post about. Today we are talking about making a Starbucks coffee at home. Not the standard black coffee from Starbucks, but the more delicious variety like the vanilla latte.

At the time of this post the Coronavirus is in full swing and many Starbucks shops are closed, or limited hours, or the drive-thru line is too long for the wait. Here is your in-home solution:

The first thing to understand is how sweet Starbucks really makes their drinks. It is well known the calorie intake and carbohydrate count for a vanilla latte is fairly high. This DIY recipe will help you control those intake amounts to help better control the sugar intake your body gets from these sweet-delicious-energy-giving drinks.

We should really give Starbucks serious credit on figuring out the right bit of sugar and caffeine to jump start the heart rate in a legally addictive way.

Starting with a vanilla latte, the true magic of this drink is the full, frothy milk. No requirement for a fancy frother which you see on the Starbucks counter top, but rather a simple $40 (about) milk frother from Amazon will do the trick (Miroco). The Miroco is a fantastic product and truly a life changer for making coffee flavored drinks. Probably the best “appliance” purchase we’ve made since the introduction of the DVR in 1999 (feel free to challenge us on this claim {wink}).

starbucks frother

First step is brew your coffee. Use any brand. If you really want the exact taste of a Starbucks version, use their coffee, but honestly they put enough sugar and syrup into these drinks, the coffee brand doesn’t matter all that much.

Once the coffee is brewed, fire up the milk frother.

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Review: Wireless Phone Charger For Tesla Model 3

My neighbor has a Model 3 with a wireless charging station right in the console. I didn’t realize this was an after-market purchase, so wanted to review it here today. The brand my neighbor has is the Taptes generation 2 wireless charging station.

The Gen 2 has some improvements from the previous version. Starting with the basics, this version has a ridge line molded into the center of the charging platform. This allows a user to charge two phones vertically, independently getting their charge, at the same time. The center line ridge doesn’t go all the way to the bottom so if you need to charge your phone while in landscape mode, viewing say Google Maps, you have that capability.

The charging station does have USB-C in the event a passenger has a phone which doesn’t support the wireless charging mode. This would include both Android and Apple phones.

My neighbor has the Model 3, 2019 version, but this version does support the Tesla console for 2017, 18, 19 and 20 year models. The black is the same tone of black as the black interior of the Tesla. As I mentioned before, I didn’t realize this was an after-market product until my neighbor told me so. In my opinion, it didn’t look like an add-on.

The charging pad has anti-slip grip material so the phone doesn’t move around while driving. The wireless signal is strong enough to go through phone cases. However; if you have a magnetic disc or a pop-socket on the back, it might not charge as it’s either too far away from the wireless power signal, or the obstruction doesn’t allow your phone to take the wireless charge signal. The charging pad also has two LED to indicate the charging station is sending a signal to the device. Your device will also confirm it is receiving a charge. The wireless charging station comes with two USB splitters so you can power the charging station from the Tesla USB system and still have USB connections off to the dash for something like a dash-cam recorder or other device.

    In the package
  • 1 x Wireless Charger / Pad Gen 2
  • 1 x Manual
  • 2 x USB Splitters

tesla wireless phone charger

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Home Office Tools – Home Office USB Duplicator

Today, like never before, individuals are working from the home office. Working in an favorable situation is decent and beneficial and I think this is why so many love the home office. As favorable as things may be; now and again the home office doesn’t have a computer gear to carry out the responsibilities required. With numerous business now practicing social distancing, one will discover certain things are still needed.

Consider the niche requirement to make USB duplicates at the home office. For instance, let us consider an IT director who needs to turn out bootable restore recover sticks, or a product engineer who is required to send programming updates to a group of remote office sales guys. These managers need a snappy, simple and econimical bit of gear to do the job.

The smaller USB flash drive duplicator by Nexcopy is an incredible solution for this definite issue. The unit measurings is 15cm long and 10cm wide. So it will fit into any computer bag, and light as a book.

Nexcopy USB Dupliclator

The USB duplicator is a one-master to four-target copy station. The duplicator is a digital binary copier which duplicates any file system or structure provided by the master host flash drive. Using a USB cable the duplicator can power the five USB flash drives; however, is not recommended for using with USB hard drives.

With a duplicator like this, making duplicates at the home office is speedy and extremely simple. There are four menu buttons, enter, escape, up and down. The unit will work at the press of a single button, which makes this unit ideal for non technical people. The mini duplicator may be configured to perform a binary copy or a binary copy and compare. The copy and compare function gives the user piece of mind that each copy is exactly the same as the master. Having a verification option will insure every copy is the same as the master, giving the user piece of mind all the copies are 100% correct and exact.

Reviewing the features of the duplicator, we have note worthy features:
  • Asynchronous copy mode, all the time
  • Binary copier will copy any format; FAT, FAT32, exFAT, NTFS, HFS, Ext2,3,4, Proprietary
  • Binary CRC verification algorithm
  • Quick Erase and Full Erase for disk sanitization
  • Four language modes in LCD menu
  • USB speed benchmark utility
  • Firmware upgradeable

Is the cost of the mini sized USB duplicator worth the cost for a home office employee? The easiest way to determine this is asking ourselves how much time the duplicator will save. This mini copy station, called the Nexcopy USB104SA will copy one GB of data to each device in just over one minute. That is extremely fast. If an IT manager or software engineer had to data load a 12 GB worth of data on a PC, it would take about 12 minutes to make four copies. Windows could never copy that much data, that quickly. When using the copy and compare mode it takes a bit longer… about 1.5 minutes per GB. So still incredibly quick.

Several features are worth mentioning in a bit more detail. The Erase function is a technical term to remove all data from the USB flash drive. This is a robust feature which guarantees data is removed from the flash drive with no ability of the data being recovered. Formatting a drive doesn’t clean data from the drive, the format function only destroys the file allocation table (the directions to find data), but erase will actually overwrite random binary data over the data blocks. There are two erase settings available on this little USB104SA, and the quick erase will scrub certain portions of the drive so some data could remain, but most likely the files would be corrupted if trying to be recovered because the random write sequence skips around the drive and over writting just bits of memory. The full erase function will write binary randomly zeros and ones to all the NAND memory of the flash drive. By doing this randomization, it would be impossible for sophisticated forensics recovery software to restore any data.

The four language modes include English, Spanish, Portuguese and Simplified Chinese.

The USB benchmark speed is a great a convenient tool for testing the read speeds and write speeds of a thumb drive. This is even more valuable when dealing with promotional quality media, as this low-end memory is very instable and can get frustrating to deal with. The easiest way to determine the quality of memory is looking at the write speed. With the benchmark utility one can test the read and write speed of a drive. The USB duplicator will write about 20MBs of random data to determine the average read and write speed. If the USB memory has a write speed of 4MB/second or lower, it’s not good quality. If the write speed is above 8MB/second for USB 2.0 media and above 20MB/second write speed for USB 3.0 media, it is of better quality memory.

The duplicator uses the CRC verification protocol. We did a previous article on Cyclical Redundancy Checking and a great read.

The USB duplicator made by Nexcopy is a backward compatible product and will copy to USB 1.0, USB 2.0 and USB 3.0 flash drives. The duplicator will write to the device as fast as it will allow. The best write times will result from the operator using USB 3.0 media.

Source: GetUSB.info

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Inexpensive iPhone Charging Cable – and Smart

Are you looking for an inexpensive iPhone cable? This is a common search on Google because those cables go missing, get taken by your kids or co-workers, or possible break. It is as-though we need an endless supply of them. I don’t recall the last cable I had which lasted more than four months. There is an article out there, somewhere, that claims for each iPhone made, the user will need at least three cables for charging it. The link to that article escapes me, but I do believe it speaks the truth. From personal experience there is one needed for the car to charge while driving. One needed at work to charge while working, need that TV back-ground noise {wink}, and one needed at home for charging overnight.

iPhone cables or lightening cables are expensive. Go to Amazon and you will find a decent six foot cable costing nearly $20. Couple that cost with our observation about needing three cables, we are now looking at a $60 dollar expense. No thanks! We want an inexpensive iPhone charging cable.

This cable problem actually gets worse, not better, here is why:

You need microUSB cables to charge your portable battery packs. Okay, so we have our three cables for charging an iPhone. The work one, the car one and the home one. Of course we all have portable batteries to charge our phone, when away from said places. How do you charge those portable batteries? With a microUSB cable. At least those are cheaper than an iPhone lightening cable. Never-the-less it’s still another corded cable.

We all need the portable battery for charging – don’t think otherwise! Kids baseball game could stretch to three hours. Girls softball games are usually 1.4 hours and a couple per day. A golf round with your friends, typically 4.5 hours. The point, many times we find ourselves away from the car, home and work place and have the need for charging.

How do we solve this problem of finding an inexpensive iPhone charging cable? The answer is with a combination of products. The combination will not only charge your iPhone, but also charge the portable battery packs.

Going to Amazon you can find a pack of five microUSB cables for under $10. Be sure to check the length you want. It is easy to make the mistake of buying a shorter cable because the price is a bit lower, only to find out the length is too short.

The other item you need is a microUSB to Lightening adapter. This are little adapters that sit at the end of your microUSB connector and transfor the connection to a Lightening connection for your iPhone. A pack of four can be found on Amazon for less than $10.

Its important to note, these adapters only supply power to your iPhone. The adapters do not allow data transmission to your iPhone. Which is fine, when is the last time you connected your iPhone to the computer anyway for sync’ing? It’s all done wirelessly.

So with our $20 you just spent at Amazone you have three Lightening cables to charge your iPhone and you have three microUSB cables to charge your portable power pack. This is a very inexpensive iPhone charge cable solution. It would amaze me on why anyone would purchase something different, don’t you?

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USB WiFi Smart Adapter – But Why?

Given USB is everywhere, this guy gives you the ability to control the on and off power of a USB powered device.

I think for most people, there is no real difference between a WiFi outlet and the WiFi USB adapter. The only difference would be if you want to control the power of a USB gadget which is being powered from your computer. If it’s anything else, as for the power source, it will be a wall outlet.

Can you plug in your Alexa via USB? No. Can you plug in your Google Home via USB? No. Can you plug in your lamps in our family room or living room via USB? No. Can you plug in your bluetooth speaker to charge vai USB? Yes, but who cares about controlling the power of that? Can you plug in your phone via USB to charge it? Yes, but who cares, you want that thing to charge to it’s full capacity anyway. Oh wait, unless you are a super nerd, like these guys (read the comments section).

For the $6.50 that Sonoff is planning to charge you, I would put my money towards a more usable product, like the Smart Life WiFi outlets.

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