SanDisk Ultra Dual Drive 256GB USB-C Black
Score: 71/100
Samsung USB-C Flash Drive 512GB Gray
Score: 81/100Rankings
The Samsung Type-C 512 GB flash drive delivers fast 400 MB/s reads in an ultra-compact, rugged metal-cased form factor. Its drawbacks are a modest 110 MB/s write speed and a USB-C-only interface that may need an adapter for older devices. Best suited for mobile professionals who prioritize portability and durability over sustained write performance.
The SanDisk Ultra Dual Drive 256 GB combines USB-A and USB-C connectors in a retractable design, delivering up to 150 MB/s read speeds and a 5-year warranty. It lacks waterproofing, hardware encryption, and detailed write-speed specifications, which may limit its appeal for power users. Best suited for mobile users who need quick cross-platform file transfers and a compact, high-capacity drive.
| Attribute | | |
|---|---|---|
256 GB | 512 GBbest | |
150 MB/s | 400 MB/sbest | |
— | 110 MB/sbest | |
| ↓ lower better | 9.1 g | 3.4 gbest |
5 yearsbest | 5 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Storage Capacity (GB) | 256 GB | 512 GB |
Performance(1) | ||
Read Speed (MB/s) | 150 MB/s | 400 MB/s |
Connectivity(2) | ||
USB Version | USB 3.1 Gen 1 | USB 3.2 Gen 1 |
Interface | USB | Type-C |
Build & Design(2) | ||
Weight (g) | 9.1 g | 3.4 g |
Dimensions (L×W×H) (mm) | 38.1x20.7x9.4 mm | 2.54x16.0x33.78 mm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers highlight the high read-speed performance and the convenience of dual connectors, but note the lack of detailed write-speed information and limited durability features in the base model.
Everyday users appreciate the convenience of quickly offloading phone media and the portable design, while some express disappointment with slower real-world speeds and wish for better ruggedness or security features.
Retailer editors such as B&H Photo and Staples praise the drive's multi-proof construction and its advertised 400 MB/s read performance on USB-C 3.2 Gen 1, emphasizing fast and efficient data transfer for high-capacity needs. However, professional reviews are limited, leaving independent verification of real-world endurance and write performance scarce.
Everyday users consistently highlight the drive's high read speed, tiny form factor, and rugged, water- and shock-proof build as major positives for on-the-go use. The most common criticism revolves around the comparatively slow write speed and the absence of a protective cap, which some feel leaves the connector vulnerable.
