SAMSUNG BAR Plus 256GB - 400MB/s USB 3.1 Flash Drive Titan Gray (MUF-256BE4/AM)
Bottom line: The SAMSUNG BAR Plus 256GB ($69.39 on Amazon as of 2026-10-21 12:15 UTC): Read speeds up to 400MB/s over USB 3.1; main trade-off: samsung lists 300MB/s in its own description, not 400MB/s.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Read speeds up to 400MB/s over USB 3.1
- ✓ Five-proof: water, shock, magnet, temperature, x-ray
- ✓ One-piece metal casing with key ring loop
- ✓ Backwards compatible with USB 3.0 and USB 2.0
Cons
- ✗ Samsung lists 300MB/s in its own description, not 400MB/s
- ✗ Write speed is not published in the product specs
- ✗ Metal body conducts heat during long transfers
- ✗ Only rated to 60C operating temperature
Manufacturer description
The Samsung BAR Plus 256GB takes the guesswork out of carrying large files around, moving data at read speeds up to 400MB/s over USB 3.1 so a folder of 4K clips or a game backup finishes in a fraction of the time a standard drive needs. Samsung builds it on V-NAND memory and wraps the whole thing in a one-piece rugged metal casing, which is why this flash drive survives the abuse a keychain accessory actually sees. The five-proof rating covers water, shock, magnets, temperature, and airport x-ray machines, and the drive is rated for operating temperatures from 0 to 60 degrees Celsius. A…
SpecPicks Verdict
SpecPicks scored SAMSUNG BAR Plus 256GB using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. Samsung's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
How fast is the Samsung BAR Plus 256GB?
Samsung rates it at read speeds up to 400MB/s over a USB 3.1 port. Note that Samsung's own product description cites up to 300MB/s, so real-world reads will depend on your port and the files you move. Write speed is not published.
Will it work with my older laptop that only has USB 2.0?
Yes. The drive is USB 3.1 with backwards compatibility for USB 3.0 and USB 2.0, so it will connect and work in an older port, just at that port's slower speed rather than the full 400MB/s.
Is the Samsung BAR Plus actually waterproof?
Samsung rates the drive as water proof, shock proof, magnet proof, temperature proof, and x ray proof. That five-proof rating is why it holds up on a keychain or in a bag. Check the product listing for the specific ingress rating.
Does it come with a key ring?
The rugged metal casing includes a built-in key ring loop designed to keep the drive attached to your keys or bag so it does not get lost. You supply your own ring or carabiner to thread through it.
What temperatures can it handle?
The listed operating temperature range is 0 to 60 degrees Celsius, which covers normal indoor and most outdoor use. Storage in a hot car above that range is outside the rated spec.
Key Features
- Redefine everyday file transfers with speeds up to 400MB/s
- Reliable and secure storage for your photos, videos, music, and files
- Rugged metal casing for durability with key ring to prevent loss.Operating Temperature:0~60℃
- Safeguard your data (Water proof, shock proof, magnet proof, temperature proof, x ray proof)
- USB 3.1 flash drive with backwards compatibility (USB 3.0, USB 2.0)
Full Specifications
| Brand | Samsung |
|---|---|
| Color | Gray |
| Model Name | BAR Plus |
| Read Speed | 400 megabytes_per_second |
| Unit Count | 1 Count |
| Write Speed | 400 megabytes_per_second |
| Connectivity | USB |
| Model Number | MUF-256BE4/AM |
| Built-In Media | USB 3.0 Flash Drive |
| Item Type Name | Samsung MUF-256BE4/AM 256GB BAR Plus (Grey-Metal) USB 3.0 Flash Drive |
| Mfr Part Number | MUF-256BE4/AM |
| Special Feature | Magnet, Shockproof, X-Ray Proof |
| Flash Memory Type | CompactFlash |
| Compatible Devices | PC, Notebook, USB 3.0 compatible devices, USB 2.0 compatible devices |
| Hardware Interface | USB 3.2 Gen 1 |
| Additional Features | Magnet, Shockproof, X-Ray Proof |
| Warranty Description | 5 Year Warranty |
| Connectivity Technology | USB |
| Memory Storage Capacity | 256 GB |
| Hardware Connectivity Technology | USB Type A |
Ready to buy?
SAMSUNG BAR Plus 256GB - 400MB/s USB 3.1 Flash Drive Titan Gray (MUF-256BE4/AM) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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