
SAMSUNG BAR Plus 3.1 USB Flash Drive
- USB Flash Drive
- Better rated than 95%
- More reviewed than 74%
A durable, fast 128GB flash drive from a major storage brand, worth buying for anyone who has broken a plastic flash drive and wants one that survives a wash cycle or a drop.
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How it ranks among the 19 usb flash drives we track
4.7★ across 23,400 Amazon ratings, Bayesian-smoothed toward the category average.
23,400 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
2,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 19 usb flash drives we track - how the scorecard works · full usb flash drives data report. Confidence: limited - incomplete product information.Updated 8 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A metal-bodied USB 3.1 flash drive built for durability, with 128GB of storage and read speeds up to 300 MB/s for moving large photo, video and file libraries between machines.
The BAR Plus trades the flimsy plastic shell most flash drives use for a solid metal casing rated against water, shock, temperature swings, magnets and X-ray exposure, with a keyring loop so it stays attached to keys instead of getting lost in a bag. Samsung backs it with a 5-year limited warranty, longer than most drives at this capacity.
- 128GB capacity
- Up to 300 MB/s read speed
- Metal, water and shock resistant body
- 5-year limited warranty
Who it's for
Fits anyone who carries files between a work and home computer, needs a rugged backup drive for a bag or car, or wants a keychain drive that survives being dropped or washed. Not built for anyone who wants USB-C for a phone or tablet without an adapter.
Strengths and trade-offs
Drawn from this product's published specifications.
- Metal casing rated for water, shock and temperature extremes
- Fast enough to move a 3GB 4K video in about 10 seconds on USB 3.1
- Keyring loop keeps it from getting misplaced
- 5-year limited warranty
- USB-A only, no USB-C version in this listing
- Full 300 MB/s speed needs a USB 3.1 port to reach
Performance notes
The 300 MB/s USB 3.1 read speed matters most when copying large 4K video files or bulk photo libraries onto a modern USB 3.0 or 3.1 port; older USB 2.0 ports will bottleneck it well below that figure. The metal housing has no moving parts, so most of its durability claims come down to sealed construction rather than added electronics.
Specifications
| Brand | Samsung |
|---|---|
| Model | MUF-128BE4/AM |
How it compares
This product against the closest alternatives we track in usb flash drives.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| SAMSUNG BAR Plus 3.1 USB Flash DriveThis product | 4.7 / 5 | 23,400 | 2.7 / 5 |
| PNY 128GB Turbo Attaché 3 USB 3.0 Flash Drive 2-PackPNY | 4.6 / 5 | 4,675 | 4.7 / 5 |
| SanDisk 64GB Ultra Dual Drive Go USB Type-C Flash DriveSanDisk | 4.6 / 5 | 15,000 | 4.6 / 5 |
| USB Flash Drive 32GBMaspen | 4.5 / 5 | 4,670 | 4.6 / 5 |
| SamData 32GB USB Flash Drives 2 Pack 32GB Thumb Drives Memory Stick Jump Drive with LED…SamData | 4.5 / 5 | 41,474 | 4.5 / 5 |
Questions about the Samsung MUF-128BE4/AM
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Samsung BAR Plus work with USB 2.0 ports?
Yes, it is backward compatible, but transfer speeds will drop to USB 2.0 levels on an older port.
Is the BAR Plus 128GB actually waterproof?
Samsung rates the metal body against water, shock, temperature extremes, magnets and X-ray exposure, per its published specs.
Does it come with a warranty?
It carries a 5-year limited warranty from Samsung.

