Photograph: Simon Hill
Other Flash Drives We Like
We have tested many other USB flash drives that did not make the cut. Here are a few that might be worth considering for some folks.
Photograph: Simon Hill
Kingston Dual Portable SSD (1 TB) for $229: With a snazzy metallic red body, this SSD disguised as a flash drive is very speedy, matching the stated 1,050 MB/s read and 950 MB/s write in my tests. It is USB 3.2 Gen 2 with a C jack at one end and an A jack at the other, both with removable covers. As much as I like this drive, which comes in 512-GB, 1-TB, and 2-TB models, it is on the pricey side.
Amazon Basics Flash Drive (128 GB) for $18: I like the grippy texture on the slider of this drive because it’s easy to open one-handed and locks in place securely. The loop at the top is perfect for a key ring, and it is lightweight. Performance was limited, as you might expect at this price, but it consistently exceeded the stated 130 MB/s read and 30 MB/s write speeds for larger files, though it only had 116 GB usable out of the box.
Buffalo External SSD-PUT Stick (500 GB) for $70: Another SSD in a flash drive body, this drive hit 450 MB/s in my tests and offers shock protection for falls. There’s also a sliding USB-A, and it comes with a USB-C adapter. It is pretty chunky for a flash drive, so you may find it blocks adjacent ports. You can also get reasonably priced 1- and 2-TB versions of this drive.
PNY Pro Elite V2 (256 GB) for $60: This sliding drive has a plastic cover to protect the USB-A plug, and was our compact pick for a while. It performed well (read and write speeds hovered around 415 MB/s and 425 MB/s) in my tests, and has an opening for a lanyard or keyring. I tested the 256-GB drive, but there are 512-GB and 1-terabyte models.
SanDisk Ultra Dual Drive Go (128 GB) for $29: This handy drive swivels to give you USB-C or USB-A, and comes in various sizes and some fun colors, but the lower capacity drives are slow (USB 3.1). You can get the 128 GB drive and up in USB 3.2 Gen 1 for up to 400 MB/s read and it’s a solid alternative to the PNY Duo above.
PNY Elite-X (128 GB) for $16: This super-compact, sliding drive has a USB-C 3.2 Gen 1 jack and a loop on the end to fit on a keyring. It worked fine but proved unremarkable in my tests (around 200 MB/s read, and 130 MB/s write).
Kingston IronKey Keypad 200 (16 GB) for $112: If you need a secure drive, Kingston’s IronKey boasts FIPS 140-3 certification, XTS-AES 256-bit encryption, and a special epoxy on its circuitry to make it impossible to remove components. On the downside, it is expensive, the keypad is fiddly, and 10 wrong entries wipe the drive.
Samsung Bar Plus (256 GB) for $52: An elegant, one-piece, curved design makes this drive easy to withdraw and there’s a loop so you can slip it onto a keyring. Test read speeds were just shy of 400 MB/s, with write speeds just over 100 MB/s, but the smaller drives (32 GB and 64 GB) are significantly slower. The Bar Plus is also a durable option, with Samsung claiming it is waterproof, shock-proof, temperature-proof, magnet-proof, and x-ray-proof.
Avoid These Flash Drives
Photograph: Simon Hill
Silicon Power DS72 Portable SSD (1 TB): This is a reasonable price for a 1-TB drive with USB 3.2 Gen 2 USB-A and USB-C connectors, and it consistently hit 450 MB/s read and write speeds in my tests (it can hit 1050 MB/s and 850 MB/s with the right gear). It got quite warm to the touch, but the reason I don’t recommend this drive is the stupid plastic connector covers. You have to bend them back, and they get in the way when you’re trying to insert the drive.
Verbatim Dual (64 GB): This teeny drive is cheap and has both USB-A and USB-C plugs, but I found write speeds were variable (60 MB/s for USB-C and 90 MB/s for USB-A) and read speeds were around 150 MB/s for both. There is a cover for the USB-A and a wee strap you can attach, but this drive is almost too small, and it proved awkward to insert and remove. It also comes in 16- or 32-gigabyte options.
How to Eject and Format Drives
It’s a good idea to format your USB flash drive before you start using it. You’ll usually be asked what format you want to use. Almost every device will recognize the FAT32 format, but it limits the individual file size to 4 GB. Go for exFAT if you have larger files. If you format a flash drive, it will completely wipe everything stored on it. Here’s how to do it manually:
- On a Windows computer: Open File Explorer and look for your drive under This PC. Right-click on it, and select Format.
- On a Mac: Type Disk Utility into the Search, or find it via Applications > Utilities. Select your drive from the list and click Erase at the top. Then you can rename and choose a format.
- On a Chromebook: Open Files and right-click on your drive to choose Format device.
You’re probably familiar with warnings about removing a drive without ejecting it first. But there’s a genuine risk your data will be corrupted, so here’s how to do it properly:
- On a Windows computer: You can click the Safely Remove Hardware notification icon in the system tray and choose the Eject option. If you prefer not to have to eject, type Device Manager into the search bar and click to open. Expand Disk Drives and right-click on your USB flash drive, choose Properties, Policies, and set to Quick Removal.
- On a Mac: You will see an eject icon listed next to the drive name in Finder, or you can simply drag the flash drive image on your desktop to the trash.
- On a Chromebook: Open Files and right-click on your drive, then select Eject device.
- On an Android device: You can open and expand the USB notification to find an Eject option.
- On an iPhone or iPad: There is no eject option. Ensure no data transfer is in progress before you pull it. It’s a good idea to close the Files app or whatever app you were using to transfer files.
How to Get the Most From Your USB Flash Drive
There are a few things to keep in mind when you’re shopping for USB flash drives, and we also have some tips for using them.
Capacity: To decide on the capacity of the storage device you need, first check the size of the folders or files you want to copy. Each USB drive in our guide has a stated capacity, but the usable storage will be slightly less than that, because the device’s firmware requires space.
Speed: USB standards are advancing all the time, and we recommend USB 3.0 as a minimum, though higher is better. While USB standards have different theoretical maximum speeds, it’s crucial to check the manufacturer’s stated read and write speeds for each drive. If you’re primarily transferring data, you’ll want to look for a drive with high write speeds. If you’re planning on launching software on a computer through the drive (like a video game), then you’ll want a model with high read speeds. Manufacturers will state average speeds, but most drives are much faster at transferring large files and tend to be far slower at transferring small files.
Compatibility: Many flash drives will work with any device with the relevant USB port, but check compatibility to avoid disappointment. If you want to use a drive with an Android device or something from the iPhone 16 range or later, it will require USB on-the-go (OTG) support. Most Android devices do support USB OTG. You will get a notification when you insert a flash drive with options that should include File Transfer. You can try the USB OTG Checker app to confirm support if you’re unsure. Apple’s earlier iPhones and iPads don’t support USB OTG, but you can install a companion app for drives, like SanDisk’s iXpand series.
Connectors: Most flash drives have USB-A connectors, but you can also get drives with USB-C, MicroUSB, and Lightning connectors. If you plan on using a flash drive with your smartphone and computer, snag one with both of the required types of connectors. You can also buy USB hubs with multiple USB ports or adapters, but pay close attention to the supported standard or it may limit your data transfer speeds. This Anker USB-A to USB-C adapter, for example, is USB 3.0.
Security: Remember that USB drives can cause security issues, particularly for businesses, and you should never plug in random drives you find lying around. If you plan to keep sensitive data on your flash drive, then consider biometric or passcode protection, and look into the level of encryption it offers. There are software services that offer encryption and allow you to password-protect your files on any USB flash drive.
I run read and write speed tests on every drive using USB Flash Benchmark and CrystalDiskMark. I also load HD and 4K movies onto each drive and play them on an LG OLED TV, make photo backups from phones and laptops, and copy files across supported devices. I have tested some drives as security camera backups, as NAS (network attached storage) in routers, for playing MP3 music files, and to load games and saves onto various retro consoles. Our top picks continue to be used regularly for file backups over months, so we can be confident that the performance does not degrade.
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