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Harmonization Code for USB Flash Drives

HS Code for USB Flash Drives

When importing or exporting USB flash drives in the United States you will want to use this Harmonization Code to help with customs paperwork.

The Harmonization Code is tariff nomenclature for internationally trade which defines names and numbers assigned to traded products. The HS Code System came into effect in 1988 and has since been developed and maintained by the World Customs Organization (WCO), based in Brussels, Belgium. There are over 200 countries which participate in this program.

The HS Code for a USB flash drive is: 8523.51.0000

In the event your freight forwarder or delivery service tells you that an ECCN is needed to ship USB flash drives and is required to complete the Automated Export System (AES) or other documentation then please give them the above information and it should all work out.

ECCN stands for Export Control Classification Number. An ECCN is an alpha-numeric classification used in the Commerce Control List to identify items for export control purposes.

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How To: Partition a USB Flash Drive in Windows

Using Windows 10, you can partition a USB flash drive into multiple partitions. The process is not difficult, you simply follow some easy steps. This tutorial will partition the drive so that your device is assigned multiple drive letters when connected to the computer.

This partition process is not done at the USB controller level; or said another way, done at the hardware level. This USB partition process, for a lack of better terms, is done at the software level. What does this mean for you? It means the partitions can be wiped off the drive and full capacity of the USB flash drive can be restored.

When a USB stick is partitioned at the controller level, or at the hardware level, there is no way to reverse the partition. The multi-partition drive is permanent. At the end of this tutorial is the solution for a hardware based partition solution.

So let’s get started.

How to partition a USB flash drive in Windows 10:

Connect the USB flash drive to your Windows 10 machine. Be sure there is nothing valuable on the USB as this process will remove all content from the drive.

Right Click the Windows icon and select Disk Management.

The Disk Management window will appear with all the connected devices. Select your USB flash drive by clicking one time. By selecting your flash drive, it will allow Windows to apply the partition to that device.

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How To: Correctly Format a USB Flash Drive in exFAT

Whether you’re formatting an internal drive, external drive, or USB flash drive, Windows makes it possible to choose between NTFS and exFAT formats. In this guide, we’ll go over the simple steps to formatting a USB drive and which format is best for certain situations.

USB Format



exFAT is a file system optimized specifically for flash drives. Introduced in 2006, it’s designed to be a lightweight file system like FAT32 without the extra features of NTFS and without the FAT32 limitations. exFAT has very large file size and partition size limits so files larger than 4GB a piece can be stored on a flash drive formatted with exFAT. It makes very few unnecessary writes, and stores files throughout the drive in order to maximize the lifespan and speed up transfers.

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Question: Format a Flash Drive as exFAT or NTFS?

Most of the time formatting a flash drive is a very simple decision. There are only two situations where you should take consideration on what format to use. Here are the details:

Note: This article is focused towards Windows and Mac operating systems.

The file formats available for a flash drive are:

  • FAT (also called FAT16)
  • FAT32
  • exFAT
  • NTFS
  • HFS (Mac only)

Flash drive manufacturers format a drive as either FAT or FAT32. Any device of 2GBs or smaller will be formatted as FAT and any USB over 2GBs will be formatted as FAT32.

exFAT, USB

These two formats are the best file system for removable drives like flash drives because they support the quick disconnect function and chances are very slim you will destroy the device or files if you unplug the USB without using the Eject function (in Windows) or Un-mount function (in Mac).

The one huge limitation with FAT and FAT32 is the single file size limitation. If a single file is larger than 2GBs you need to have the device as FAT32. If you have a single file bigger than 4GBs then you must use NTFS or exFAT. Typically these large files are either video files or restore image files (for restoring a computer operating system from a single image file).

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Cannot Format a USB GPT Protective Partition

Sometimes you will connect a USB to the PC and get an error message saying the drive has a GPT Protective Partition and you cannot format the drive. Here is the fix to resolve the issue:

First, what is a GPT USB stick? The GUID Partition Table (GPT) is the successor to the Master Boot Record. The MBR was created by IBM back in the early 90s. The problem with MBR is the limitation to partition table sizes which is 2 Terabytes.

Since there are no 2T USB flash drives (at the time of this post), there is no need to use GPT as your partition table.

Removing the GPT Protected Partition can be accomplished through the Windows Diskpart program.

  • Determine the Disk Number for the USB GPT-protected drive. To do this, perform the following:
  1. Right-click on (My) Computer.
  2. Choose Manage.
  3. Select Disk Management (listed under Storage).
  4. Look for the drive that is identified as GPT and note the Disk number (such as Disk 1).
Format USB GPT Protected Partition
  • Now, open a Command Window. From the command prompt, type diskpart and press Enter.
  • The diskpart prompt will open.
  • From the diskpart prompt, type list disk and press Enter. A list of disks will appear in a text format. You will return to the diskpart prompt.
  • From the diskpart prompt, type select disk disknumber (in this example from the screen shot above, you would type select disk 1)and press Enter. A message appears saying that the disk is selected. You will return to the diskpart prompt.
  • From the diskpart prompt, type clean and press Enter. At this point the drive’s partition and signature a removed. You will return to the diskpart prompt.
  • From the diskpart prompt, type exit and press Enter. Type exit once more to close the Command Window.
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How To: Make a USB Read Only

There are two ways to make a USB stick read only. One way is a universal solution and is 100% permanent, the other way is PC specific and a good deterrent. When we say 100% permanent, this means the USB stick is read only (write protected) on all computers, whether it be a Mac, PC, Linux, etc type computer, the USB is read only and the status cannot be changed. The other method flags a USB device to be read only in relationship to the PC it is connected to so that whenever that USB stick is connected to that computer, it makes the USB read only and blocks all write commands to the device.

Most times an IT manager or content owner wants the USB stick to be read only so the files cannot be deleted or formatted off the drive. Another reason for making a USB read only is for the original files to remain the same and blocks the ability for files to be changed or manipulated. Finally, it’s smart to have USBs read only so that virus’ don’t jump onto the drive and possibly spread to other computers.

Let us start with the less permanent way because it’s easier to do and doesn’t require any specific hardware. You will need a Windows7 machine or higher. The Windows7 machine will have DiskPart utility which allows us to perform all sorts of cool things to flash drives, like setting write protection.

  • Connect the USB to your Windows computer.
  • To begin, go to your Windows Start and in the Search Field type “cmd”

This will run your Command prompt.

  • Next, you will want to get to the C root of the Command prompt and if you are signed in as a user you can simply type cd\ this will get you back to the root of the C drive.
  • Type DISKPART
  • Type LIST DISK

Now you will need to find the USB stick connected to your PC. Most likely it’s DISK 1

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