At first glance, this USB port looks normal. But a closer look reveals compacted dust, fibers, and residue sitting directly on the contact surface. This kind of contamination doesn’t usually cause immediate failure. Instead, it creates unstable electrical contact that leads to intermittent disconnects, unreliable charging, slower transfer speeds, and unexplained device behavior. Ports don’t need to look “packed with dirt” to cause problems — a thin layer of debris is often enough.

USB Hygiene: How Dirty Ports Cause Disconnects, Data Errors, and Premature Wear

USB is one of those everyday technologies that “just works” right up until it doesn’t. A flash drive disconnects mid-copy. A phone charges only if the cable sits at a certain angle. A USB 3.0 device suddenly behaves like USB 2.0. In many cases, the root cause isn’t a bad device at all — it’s contamination in the port, on the cable plug, or on the flash drive connector.

This article covers the practical side of USB hygiene: what dirt and residue actually do, where contamination comes from, how often ports should be inspected, and how to clean safely without damaging the connector. If you work in high-volume environments (like USB duplication stations), we’ll also cover why hygiene becomes part of the workflow instead of a troubleshooting step.

What a Dirty USB Port Really Causes

USB connectors rely on tiny contact surfaces and tight tolerances. When dust, lint, oils, oxidation, or residue get in the way, you don’t always see a total failure. You get unstable behavior: a device disconnects and reconnects, a transfer slows down, charging becomes inconsistent, or a USB 3.0 device negotiates down to USB 2.0 speeds.

The data risk is simple. Unstable connections cause retries and errors during transfers. Over time, that increases the chances of incomplete writes and file system damage — especially on removable media like FAT32 or exFAT flash drives. This is why dirty ports often get misdiagnosed as “bad drives” or “flaky cables” when the real issue is the connector.

How USB Ports, Plugs, and Cable Ends Get Dirty

A practical look at battery life, power delivery, and why USB charging changes the equation.

AA and AAA batteries quietly power a surprising amount of modern life. From TV remotes and flashlights to wireless keyboards, toys, and test equipment, these small cells sit behind countless everyday tasks. For decades, disposable alkaline batteries were the default choice. You bought a pack, used them until they died, then tossed them in a drawer or the trash and bought more.

That habit made sense when rechargeables were inconvenient, slow, and unreliable. But that era is over. Today’s rechargeable AA and AAA batteries — especially those that charge directly over USB — have fundamentally changed how practical reusable power can be.

To understand why, it helps to break the discussion into two parts: the difference between AA and AAA sizes, and the difference between disposable and rechargeable chemistry.

AA and AAA batteries share the same basic voltage class, but they are not equal. AA batteries are physically larger, which means they can store more energy. A typical AA disposable battery can hold roughly two to three times the capacity of a AAA battery. In real terms, this means an AA battery usually lasts much longer than a AAA battery in the same type of device.

Voltage, however, tells only part of the story. Disposable alkaline batteries start at about 1.5 volts, but their voltage steadily drops as they discharge. Rechargeable NiMH batteries are rated at about 1.2 volts, which sounds worse on paper but behaves very differently in practice. Rechargeables tend to deliver steadier voltage for most of their discharge cycle, while alkalines slowly fade.

This difference matters because many modern devices care more about voltage stability than peak voltage. A rechargeable battery may appear “weaker” by the numbers, but in moderate- to high-drain devices, it often delivers more usable energy before the device shuts down.

A practical, printable checklist to help you decide whether running your own password manager makes sense for your habits—not your optimism.

Password managers have moved from “nice to have” to “you really should be using one.” Most of us carry dozens (or hundreds) of logins across work, banking, shopping, utilities, and personal accounts. The problem isn’t that people don’t care about security. The problem is that humans are terrible at managing unique, strong passwords at scale. We reuse passwords. We choose passwords that feel memorable. We fall for a convincing phishing page once in a while. A password manager is one of the few tools that actually bends the odds in your favor: it generates strong passwords, stores them safely, and fills them reliably so you don’t have to rely on memory.

The current frustration is that many password managers keep their most useful features behind a paywall. Even good, respected options do it. Bitwarden is often held up as the king of open-source password managers, and it deserves the praise: the core product is excellent and the company pricing is fair. But “fair” isn’t the same as “free.” A common example is integrated authenticator features (Time-based One-Time Passwords, or TOTP) being part of a paid tier. That leads to a very tempting idea: if the software is open-source, can you run the whole thing yourself and get the best of both worlds?

That’s where the self-hosting trend comes in. The promise is simple: instead of syncing your encrypted password vault to a company’s infrastructure, you run your own private server and your devices sync to that. You keep the familiar apps and browser extensions, but the “cloud” is your hardware. Some people do this on a small always-on computer like a Raspberry Pi, often using Docker to run the password server cleanly and repeatably. The appeal is real: fewer third-party dependencies, more control, and sometimes fewer ongoing fees.

The part that gets glossed over is what you are actually trading. Hosted password managers don’t charge you only for a feature checkbox. They charge you for operations: uptime, updates, backups, monitoring, redundancy, and a safety net when things break. Self-hosting is not primarily a money-saving hack. It’s a decision to become your own tiny IT department for one of the most important systems in your life. That can be a great fit for the right person and a quiet disaster for everyone else.

If you’ve been around GetUSB long enough, you already know the bigger theme here: control and custody. We’ve written about security hardware, authentication ideas, and the “lock down” mindset for years. For example, our older posts touch on security and control concepts in different forms—like locking strategies (Crack Down on Your Lock Down) and authentication tokens (Network Multi-User Security via USB Token). A password manager is different technology, but the same question keeps showing up: do you want to outsource critical trust to a provider, or keep it under your roof?

What “Self-Hosting” a Password Manager Actually Means

A modern password manager is really two things: the client apps (browser extension, mobile app, desktop app) and the backend service that stores and syncs your encrypted vault. In a hosted model, the provider runs the backend for you. In a self-hosted model, you run it. Your client apps still do the heavy lifting: they encrypt the vault locally and decrypt it locally. The server mainly stores encrypted blobs and coordinates syncing across devices.

Every year around this time, we look back at what caught our attention, what surprised us, and what quietly reshaped how we think about USB, storage, and the way data moves through our lives.

So instead of a traditional holiday post, we took inspiration from a familiar tune and reflected on twelve ideas that stood out across our recent articles — the stories, lessons, and oddities that made this year interesting.

Here’s our take on The 12 Days of Christmas, GetUSB-style.

On the First Day of Christmas

One reminder that not all flash memory is created equal.
Performance numbers look great on paper — reliability is earned over time.

On the Second Day of Christmas

Two very different meanings of “fast.”
Burst speed is easy. Sustained performance under real workloads is not.

On the Third Day of Christmas

Three ways USB still surprises us.
From unexpected form factors to creative use cases, this interface keeps evolving.

On the Fourth Day of Christmas

Four reasons physical media still matters.
Offline storage, controlled distribution, predictable behavior, and longevity.

On the Fifth Day of Christmas

Five failure points nobody talks about.
Controllers, NAND quality, firmware, power loss, and human behavior.

On the Sixth Day of Christmas

Six devices pretending to be something else.
USB gadgets that blur the line between storage, security, and novelty.

On the Seventh Day of Christmas

Seven lessons learned from broken flash drives.
Most data loss stories start small — and end the same way.

On the Eighth Day of Christmas

Eight ways USB shows up where you don’t expect it.
Cars, medical devices, cameras, kiosks, toys, tools, and places you’d never guess.

On the Ninth Day of Christmas

Nine myths about copy protection.
Security isn’t a checkbox — it’s a design decision.

On the Tenth Day of Christmas

Ten years of watching CDs quietly disappear.
And USB step in — not loudly, but effectively.

On the Eleventh Day of Christmas

Eleven examples of USB doing exactly what it promised.
Simple, universal, and still relevant decades later.

On the Twelfth Day of Christmas

Twelve months of stories worth sharing.
From clever ideas to cautionary tales — all part of the same ecosystem.

A Final Note

Thank you for reading, bookmarking, sharing, and occasionally questioning what we publish. GetUSB.info exists because people still care about how technology actually behaves — not just how it’s marketed.

If you’re new here or just browsing again over the holidays, you can always start at the homepage and wander from there:

https://www.getusb.info/

From all of us,
Merry Christmas and Happy Holidays.
We’ll see you next year — same port, same curiosity.

USB vs Ethernet: Speed Is Easy — Reliability Is the Real Conversation

Every comparison between USB and Ethernet tends to start the same way. Someone pulls up a chart. Someone circles a number. Someone declares a winner.

And most of the time, USB wins that opening round.

Modern USB is fast — sometimes surprisingly fast. With a short, good-quality cable and a single device on the other end, USB can move data at speeds that traditional Ethernet links struggled to reach for years. That’s real, and it’s worth acknowledging up front.

But speed is the easy part of the discussion.

Speed is what you measure when everything is new, clean, short, and cooperative. Reliability is what you discover months later, after cables have been bent, ports have loosened, and users have interacted with the system in ways no spec sheet ever imagined.

That’s where the USB vs Ethernet conversation stops being about benchmarks and starts being about reality.

What USB Was Designed For — and What We Ask It to Do Today

USB was originally designed as a peripheral bus. One host. One device. Short distances. Tight timing. Predictable power delivery. Everything about the architecture assumes proximity and control.

When USB stays inside those assumptions, it performs extremely well.

The problem is that modern USB has drifted far beyond its original job description.

Today, a single USB cable is expected to move high-speed data, deliver meaningful power, negotiate voltage and current, identify itself, sometimes authenticate capabilities, and do all of this through a connector small enough to fit in a phone. In the case of USB-C, the cable itself may even contain active electronics.

That’s not a flaw — it’s an evolution. But it’s also a stress test.

The protocol grew faster than the physical layer supporting it, and that gap shows up not in lab tests, but in support tickets.

Scientists are experimenting with biological systems as a new medium for long-term data storage

Every few years, someone declares that we’re “running out of storage.” Scientists tend to respond the same way every time: Fine — we’ll just store data in glass… or DNA… or a living brain.

And no, they’re not joking.

Once you step outside the familiar world of silicon and NAND flash, data storage stops looking like chips and circuit boards and starts looking like something pulled from a biology lab, a physics experiment, or a science-fiction novel. What’s striking is that none of this is theoretical hand-waving. In one form or another, every idea you’re about to read has already been demonstrated in real labs—often working far better than intuition would suggest.

Let’s start with one of the least intuitive ideas that, once you sit with it, actually makes a lot of sense: DNA.

DNA already stores information. That’s literally its job. Every cell in your body carries a complete instruction manual for building you, written in a four-letter code. Scientists eventually realized that if biology can store that much information so densely and reliably, maybe we can piggyback on the same system.

By translating binary data into combinations of A, C, G, and T, researchers have already stored books, images, movies, and even entire operating systems inside synthetic DNA strands. The density is absurd. A single gram of DNA could theoretically hold hundreds of petabytes of data. Stored correctly, it could last thousands of years.

The catch, of course, is speed. Writing and reading DNA is slow and expensive, so this isn’t replacing your SSD anytime soon. But as a long-term archive, DNA starts to look less like a novelty and more like a biological vault.

Once you accept that molecules themselves can store data, proteins are the next logical step—and this is where things start getting strange.

Proteins don’t just sit there; they fold. The exact way a protein folds determines how it behaves, and in some cases, that folding can change in stable, repeatable ways. Scientists have engineered proteins that flip between multiple shapes, with each shape representing a different data state. In effect, a single molecule becomes a microscopic switch.

Cells already use this trick to “remember” past signals, so researchers are essentially hijacking biology’s own memory system. This idea isn’t even new. Nearly two decades ago, experiments were already showing how biological proteins could be used to store staggering amounts of data, long before “bio-storage” became a buzzword.

It works, but it’s fragile. Temperature, chemistry, and time all interfere. Still, the notion that information can be stored in the way a molecule curls up on itself is one of those ideas that tends to stick in your brain.

Encryption protects access to data, but it doesn’t guarantee the data hasn’t changed

When people talk about USB security, encryption usually comes up first. And for good reason. If a drive is lost or stolen, encryption protects the data from being read by someone who shouldn’t have it.

But encryption answers only one question: Can someone read what’s on the drive if they get it?

It doesn’t answer another question that often matters just as much: Can the contents of the drive be changed at all?

That distinction gets overlooked, and in many environments, it’s the more important one.

Encryption protects data. Read-only protects trust.

A writable USB drive is mutable by nature. Files can be modified, added, replaced, or removed. That’s true whether the data is encrypted or not. Once a drive is unlocked, the system assumes change is allowed.

Read-only media changes the model entirely. Instead of asking who is allowed to modify the data, it removes modification from the equation in the first place. The device becomes a reference, not a workspace.

That difference shows up clearly when you look at how USB drives are actually used in the real world.

Healthcare: stopping problems before they start

In healthcare environments, the fear isn’t just data theft. It’s contamination.

Malware doesn’t need permission to copy itself onto writable media. If a USB drive can accept new data, it can accept the wrong data. A drive used on one system can quietly become a carrier to the next.

Encryption doesn’t prevent that. Once a drive is writable, the system treats it like any other storage device.

Read-only USB media removes that pathway. Nothing new can be written to the device unless someone intentionally allows it. That means fewer opportunities for accidental infection, fewer unknown variables, and fewer assumptions about where the drive has been.

If you want the deeper “how it works” version, this Lock License write-up is a good reference: new flash drive counters USB cyber threats.

Legal: preserving integrity matters more than secrecy

Legal environments care deeply about authenticity. Evidence, testimony, video files, transcripts, and supporting documents must remain exactly as they were when produced.

Encryption can protect those files during transport, but it doesn’t guarantee they haven’t been altered. A writable drive introduces doubt, even if no one intended to change anything.

Read-only media establishes a stronger position: the contents are fixed. The device itself enforces that rule. When material passes between parties who may not trust each other, that immutability becomes part of the chain of custody.

In legal disputes, it’s often not enough for data to be secure. It has to be defensible.

Manufacturing and service environments: controlling the source of truth

Manufacturers, especially in automotive and industrial settings, rely on accurate instructions, firmware, service manuals, and calibration data. Those files aren’t just reference material — they directly affect safety and performance.

A writable USB drive introduces risk. Instructions can be altered, overwritten, or replaced, intentionally or accidentally. Over time, different versions start circulating, and no one is quite sure which one is authoritative.

Read-only media helps enforce a single source of truth. The device delivers information, not a place to store new information. That separation reduces errors and limits the opportunity for unauthorized changes.

If you’re coming from the “old-school write-protect switch” world, here’s a practical explainer on the modern replacement approach: USB write protect switch replaced with better technology.

Public works and infrastructure: fewer assumptions, fewer failures

Public works organizations often work with field equipment, control systems, and infrastructure assets that aren’t easily isolated or replaced. USB drives are commonly used to move configuration files, logs, or updates between systems.

The challenge isn’t just security — it’s reliability. When devices move between unknown systems, assumptions break down quickly. A writable drive carries the history of everywhere it’s been.

Read-only media limits that history. The device behaves predictably every time it’s connected. That consistency matters when systems control physical infrastructure rather than office software.

For industrial and critical environments, this is also worth a look: industrial control system USB flash drive designed for ICS security.

The overlooked question

Encryption remains important. There are many cases where it’s absolutely necessary.

But encryption answers only one part of the problem. Read-only answers a different one — whether the data can change at all.

In many environments, especially those dealing with safety, compliance, evidence, or critical systems, immutability matters as much as confidentiality.

Put simply:
Encryption protects data after something goes wrong.
Read-only helps prevent the problem in the first place.

That’s why, in practice, USB read-only often matters more than encryption.

THE SMART TV USB PORT INTERVIEW

Structured like a late-night talk show, this article breaks down—plain and simple—why smart TV USB ports are locked down and what’s really going on behind the scenes.

GetUSB.info: Welcome back. Tonight’s guest is a man who has spent years smiling politely while customers yell at him in big-box parking lots. Please welcome… a senior executive from the smart TV industry. We’ll call him Mr Hollywood, because legal asked nicely.

Mr Hollywood: Happy to be here. And yes, my USB ports are… “selective.”

GetUSB.info: Selective is one word. People at home are calling it “locked down,” “crippled,” and “why does my $900 TV act like a nervous librarian?” Let’s start simple. Why do smart TVs restrict USB ports so you can only view pictures and certain videos through the TV’s media app?

Mr Hollywood: Because the moment we let that USB port behave like a general-purpose computer port, we turn a television into a permanently connected computer with a very large “attack surface.” And most people don’t realize their TV is basically a computer. It has an operating system. It has network access. It has background services. It has update mechanisms. It has apps. It has DRM modules. It’s sitting on your home network near your phones and laptops. It’s always on or semi-on. That’s a lot of opportunity for something to go wrong.

So we take a very pragmatic approach: if we can keep USB limited to a narrow set of use cases—photos, videos, maybe music—we drastically reduce the number of ways an attacker can poke at the TV. It’s not that we’re trying to make your life miserable. It’s that we’re trying to prevent the TV from becoming the easiest device in your home to compromise.

GetUSB.info: Okay, you said “attack surface.” For non-tech folks: explain it like you’re explaining it to your aunt, who still calls HDMI “the big USB.”

Mr Hollywood: Sure. Think of your TV like a house. Every feature is a door or a window. A simple TV has a few openings: power, maybe an antenna input, maybe HDMI. A smart TV has a lot more openings: Wi-Fi, Bluetooth, apps, a web browser, voice assistants, streaming clients, and yes—USB.

If we let USB do “everything,” we need the TV to safely handle every possible kind of drive, every possible folder structure, every possible file type, and every possible corrupted or malicious data situation. That means more code. More code means more bugs. More bugs means more chances that someone can create a file or a drive that triggers a crash or, worse, lets them run their own code on the TV.

Now, if we narrow USB down to “the TV will only read media files in a controlled way,” we can build a simpler, safer pathway. That pathway might still have flaws, but it’s a smaller surface area. Fewer doors and windows.

GetUSB.info: So you’re saying the TV is protecting itself because it’s basically a computer. But some people will say, “Come on, it’s a TV. Who’s going to hack a TV through a USB stick?”

Alright, picture this.

I’m sitting in an airport lounge that smells like carpet cleaner and broken dreams, ordering a drink that’s technically a beer but priced like a mortgage payment. I haven’t even taken my first sip yet when I overhear that guy two seats over, leaning in like he’s about to reveal classified information.

“Don’t plug your phone in there,” he whispers. “They steal your data.”

I almost spit my drink.

This whole airport USB charging panic has taken on urban-legend status. It’s right up there with razor blades in Halloween candy and the idea that airlines make money off baggage fees instead of your soul. And yeah, the warning signs are everywhere now — “Avoid public USB ports,” “Use your own charger,” “Juice jacking is real.” Sounds scary. Sounds official. Sounds… mostly wrong.

Here’s the thing. Ninety-nine percent of the time, plugging your phone into an airport USB port is about as dangerous as using their Wi-Fi to check the weather. Those charging stations aren’t sitting there running some evil hacker OS waiting to suck your photos into the cloud. Most of them are power only. No data. No handshake. No funny business. The data lines — the infamous D+ and D- wires — are either clipped, shorted, or never connected in the first place. They exist purely to shove electrons into your battery and nothing more.

No data lines means no data transfer. Period. You can’t steal what isn’t electrically there. That’s not an opinion, that’s physics.

Now, could there theoretically be a rogue charging station somewhere on planet Earth that exposes full USB data and tries something clever? Sure. There are also theoretically sharks in swimming pools. Doesn’t mean you panic every time you cannonball. Modern phones are not stupid. If something fishy happens — if a port actually presents itself like a computer — your phone will immediately ask you that very un-subtle question: “Trust this computer?” That’s your red flag. That’s the bouncer tapping you on the shoulder and saying, “Hey buddy, you sure about this?”

If you don’t tap yes, nothing happens. End of story.

The real villain in this whole saga isn’t the airport wall port. It’s the mystery USB cable. The free cable.

Five Reasons USB Sticks Will Be Around a Dozen More Years — and Why Flash Drives Still Matter in a Cloud-First World

Reason #1. Universal Compatibility Isn’t Going Anywhere

If you’ve been around USB as long as we have at GetUSB.info—since 2004, back when flip phones ruled the earth and “cloud” meant weather—you start to notice a pattern: every few years someone confidently announces the death of the USB flash drive. And yet, like a reliable old fishing boat or the one screwdriver you can never find until you really need it, the humble USB stick keeps showing up exactly where it matters. The first reason is simple: universal compatibility isn’t going anywhere. USB ports remain the one port manufacturers can’t ditch without getting angry calls from people who still plug in everything from cameras to car infotainment systems to conference room displays. As long as hardware continues to lean on USB-A and USB-C—and trust us, it will—flash drives stay relevant by default.

Reason #2. Air-Gapped Security Still Beats the Cloud

The second reason is the big one nobody wants to admit: air-gapped security still beats every “modern” idea floating around. Cloud storage may be convenient, but it’s also a giant target with a blinking neon sign that says “please hack me.” A write-protected USB drive — yes, the same kind used in clinics, labs, field teams, military gear, and everywhere else with real stakes—remains the easiest way to guarantee nothing gets added, deleted, or tampered with. When HIPAA folks and compliance officers clutch their drives like priceless relics, they’re not being dramatic. They’re being smart.

Reason #3.

Why Some USB-C Adapters Slow Down Speeds Even When They Look Like USB 3.x — and How Hidden Design Shortcuts Cause USB 2.0 Fallback

The short answer is that these adapters can slow down data transfer speeds, but not always. The adapter in the photo is a USB-A to USB-C adapter, where the blue insert on the USB-A side indicates USB 3.x capability. Whether it slows data rates depends on several factors. The first factor is what the adapter itself is rated for. If the adapter was designed for USB 3.0 or USB 3.1 Gen 1 at 5Gbps, or USB 3.1 Gen 2 at 10Gbps, it will not bottleneck performance as long as everything else in the chain supports those same speeds. However, many inexpensive adapters are internally only USB 2.0 at 480Mbps even though they appear externally as USB-C adapters, and those will slow transfers significantly.

The second factor is the capability of the device the adapter is being plugged into. Many phones, laptops, and tablets—especially budget models—only support USB 2.0 speeds over USB-C, and if that is the case, speeds will be slow no matter how capable the adapter may be. The third factor involves the speed rating of the flash drive or storage device being connected. If the drive supports only USB 2.0, it will be slow regardless of the adapter.

What Starts as a “Free Storage System” Turns Into a Slow-Motion Disaster the Moment USB Flash Meets NAS-Level Workloads

Everyone has that drawer. You know the one. A tech graveyard packed with five different charging cables from extinct phones, a random SIM tool that’s definitely not from your phone, and a fistful of old USB flash drives that you swear are worth keeping because “someday I’ll use these again.” And then one day, inspiration strikes: You decide those old USB 3.0 beauties are destined for greatness. “I’ll build a NAS with them!” you proclaim. “A massive storage array for free! Eco-friendly! Efficient! I should win awards for this.”

Except — and I say this with love — what you’re really constructing is a digital disaster disguised as a budget project. Because USB sticks and NAS workloads go together about as well as mayonnaise and hot chocolate.