SanDisk Ultra Dual Drive 256GB
Score: 82/100
Samsung FIT Plus 512GB
Score: 82/100Rankings
The SanDisk 256 GB Ultra Dual Drive offers a convenient dual-connector design that bridges USB-C smartphones and legacy USB-A computers. While read performance is decent and the swivel keyring design is portable, write speeds and lack of encryption limit its suitability for demanding tasks.
The Samsung FIT Plus 512 GB USB-A flash drive delivers fast 400 MB/s read speeds in an ultra-compact metal shell with a keyring, offering five-way rugged protection and broad device compatibility. While its read performance is solid, write speeds can be inconsistent on older hosts and the lack of a USB-C connector limits use with modern ultrabooks.
| Attribute | | |
|---|---|---|
256 GB | 512 GBbest | |
150 MB/s | 400 MB/sbest | |
75 MB/s | 400 MB/sbest | |
60 monthsbest | 12 months | |
| ↓ lower better | 9.1 g | 3.1 gbest |
| ↓ lower better | 38.1 mm | 23.62 mmbest |
| ↓ lower better | 20.7 mm | 18.8 mmbest |
| ↓ lower better | 9.4 mm | 2.54 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 256 GB | 512 GB |
Performance(2) | ||
Read Speed (MB/s) | 150 MB/s | 400 MB/s |
Write Speed (MB/s) | 75 MB/s | 400 MB/s |
Warranty(1) | ||
Warranty Period (months) | 60 months | 12 months |
Physical(4) | ||
Weight (g) | 9.1 g | 3.10 g |
Length (mm) | 38.1 mm | 23.62 mm |
Width (mm) | 20.7 mm | 18.80 mm |
Height (mm) | 9.4 mm | 2.54 mm |
Connectivity(1) | ||
USB Interface | USB 3.1 Gen 1 | USB 3.2 Gen 1 (Type-A) |
Compatibility(1) | ||
Operating System Compatibility | Windows; macOS; Android | Windows, macOS, Linux, Android, gaming consoles, smart TVs, car infotainment |
Products in the top-left offer the best value (high score, low price).
Professional reviewers commend the Ultra Dual Drive for solving the USB-C adapter problem with a sleek dual-connector design and respectable read speeds, but note the lack of rugged features and slower write performance compared to higher-end SanDisk Extreme PRO models.
Everyday users appreciate the convenience of a keychain-ready drive that easily moves photos and documents between Android phones and laptops, but many complain about sluggish write speeds, a fragile swivel hinge, and the need to reformat for macOS or Linux.
“Perfect for transferring family photos between old PCs and new phones.”
“Write speed is way slower than advertised-takes forever to copy large video files.”
“The swivel joint feels flimsy after a few months of use.”
Professional reviewers praise the FIT Plus for its real-world performance, noting the 400 MB/s read speed is reliably hit on current hardware, and they highlight the drive's rugged, ultra-compact design as a standout.
Everyday users rate the drive highly (average 4.7/5), lauding its speed, durability and convenience, while recurring complaints focus on inconsistent write speeds on older PCs and the lack of a USB-C option.
