
SanDisk Ultra Dual Drive 128GB
Score: 39/100
SamData 128GB USB Flash Drive
Score: 39/100Rankings

The Ultra Dual Drive 128 GB offers a sturdy metal body with both USB-A and USB-C connectors, delivering fast reads and a convenient keyring loop. Lack of native encryption and modest write speeds make it better suited for occasional transfers than heavy-write tasks.

The SamData 128GB USB flash drive provides a low-cost, metal-cased storage solution with basic LED feedback and OTG capability, making it suitable for casual users and bulk distribution. Its USB-2.0 speeds and modest warranty keep it from competing in performance-focused segments.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GBbest | 128 GBbest | |
150 MB/sbest | 20 MB/s | |
30 MB/sbest | 8 MB/s | |
5 yearsbest | 1 years | |
| ↓ lower better | 9.07 gbest | 10 g |
| ↓ lower better | 9.4 mmbest | 58 mm |
| ↓ lower better | 38.1 mm | 19 mmbest |
| ↓ lower better | 20.07 mm | 10 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(2) | ||
Read Speed (MB/s) | 150 MB/s | 20 MB/s |
Write Speed (MB/s) | 30 MB/s | 8 MB/s |
Connectivity(1) | ||
USB Interface | USB 3.1 Gen 1 | USB 2.0 |
Warranty & Support(1) | ||
Warranty Period (years) | 5 years | 1 years |
Compatibility(1) | ||
Compatible Operating Systems | Windows, macOS, Android | Windows, Linux, macOS |
Design(1) | ||
Material | Metal | metal |
Physical(4) | ||
Weight (g) | 9.07 g | 10 g |
Length (mm) | 9.40 mm | 58 mm |
Width (mm) | 38.10 mm | 19 mm |
Height (mm) | 20.07 mm | 10 mm |

Products in the top-left offer the best value (high score, low price).

Reviewers appreciate the dual-connector design and premium metal chassis, but note the absence of built-in encryption and occasional speed inconsistencies.
Users praise the fast photo transfers and premium feel, while complaining about slower writes and a swivel that can become loose.

“Perfect for freeing up space on my phone-transfers photos in seconds.”

“Love the metal build-it feels premium and survives daily pocket carry.”

“Works flawlessly with my MacBook Pro and Samsung Galaxy.”




Professional tech publications have not reviewed SamData drives, likely due to their budget positioning. However, Amazon sales rankings (e.g., #5 in USB Flash Drives) indicate strong consumer adoption despite the lack of editorial coverage.
Everyday users generally appreciate the low price, sturdy metal build, and convenient OTG functionality, especially in multi-color packs for gifting or organization. Recurring complaints focus on the slow USB-2.0 speeds, unclear usable capacity, occasional boot failures, and doubts about review authenticity.