Rank #10 in Best 256GB USB Flash Drives 2026: 10 Ranked by Their Own Spec Tables
fanxiang F372S 256GB USB-C + USB-A Flash Drive
Price and rating as shown on Amazon when we collected them. Both change.
The fanxiang F372S is the drive sitting at number ten in this guide: a 256GB stick with USB-A and USB-C connectors on the same body, so one drive covers an Android phone, an iPhone 15/16/17, a Windows PC or a MacBook. It costs £27.19, carries a 4.0 rating from 190 ratings, weighs 13 g, and comes in a zinc alloy shell with IP68 protection, a 360° rotating cover and a three-year warranty.
The speed story here runs the opposite way to the drives further up this guide. The headline reads "Up to 150MB/s" and the specification table agrees with it: 150 MB/s read. What the headline leaves out is write, which the same table lists at 30 MB/s — a fifth of the figure on the front of the listing. A buyer's own test, posted in the reviews, reports 135 MB/s read and 58.5 MB/s write, so the measured write speed is nearly double the listing's own number while the measured read sits below the headline; the size quoted in that same test is 29,985 MByte, which the review does not explain. Everything on this page is taken from the Amazon listing and the reviews left on it — we have not tested the drive ourselves.
How those 190 ratings break down
An average hides its own shape. This is the spread behind the 4.0 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £27.19 |
|---|---|
| Rating | 4.0 out of 5, from 190 ratings |
| Stated capacity | 256 GB (the listing notes available space may be less after formatting and system files) |
| Stated read speed | 150 MB/s |
| Stated write speed | 30 MB/s |
| Interface | USB 3.2 Gen 1, with hardware connectivity listed separately as "USB 3.1 Type-A, USB Type C" (as listed) |
| Speeds measured by a buyer | 135 MB/s read, 58.5 MB/s write, as reported in a review on the listing |
| Weight and protection | 13 g, zinc alloy body, IP68, 360° rotating cover, 3 year warranty |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“this is the h2test result on my pc using USB-Csize 29985MByteWriting speed: 58.5 MByte/s Reading speed: 135 MByte/sform factor and keychain are lovely quality”
Verified purchase“very fidgety but otherwise very good. Used it to mod an old Xbox 360, highly recommend for anyone else who needs a great USB stick. The speed is decent, has great storage, and is very durable”
What it is up against
The rivals it was ranked against in Best 256GB USB Flash Drives 2026: 10 Ranked by Their Own Spec Tables.
Questions people ask
How much storage does the fanxiang F372S hold?
The listing states 256 GB, and adds that actual available storage may be less than the stated capacity because of formatting and system files, calculated at 1GB = 1,000,000,000 bytes.
Which devices will it plug into?
The listing says the USB-C and USB-A connectors move photos, videos and files between Android phones, iPhone 15/16/17, Windows PCs, MacBooks and laptops, and the item highlight adds tablets and HarmonyOS devices.
How fast is the fanxiang F372S?
The specification table lists read speeds up to 150MB/s over USB 3.2 Gen 1 and a write speed of 30 megabytes per second.
Is it protected against water and dust?
The listing claims IP68 protection, alongside a 360° rotating cover and a zinc alloy body that it says helps dissipate heat.
How big and heavy is it?
The listing says it is half the size of a traditional USB drive and weighs 13 g, with a metal attachment ring for a keyring, bag or backpack.
What warranty comes with it?
The listing states a 3 year product warranty.
Comments
Reader comments are not checked against the manufacturer's claims above.
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