SanDisk Ultra Dual Drive 256GB
Score: 82/100
SanDisk Ultra Flair 256GB
Score: 72/100Rankings
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 SanDisk Ultra Flair 256 GB flash drive delivers fast read speeds and a rugged metal body with built-in encryption, making it a solid everyday storage solution, though its write speed and software requirements may deter some users.
| Attribute | | |
|---|---|---|
256 GBbest | 256 GBbest | |
150 MB/sbest | 150 MB/sbest | |
75 MB/sbest | 60 MB/s | |
60 monthsbest | 60 monthsbest | |
| ↓ lower better | 9.1 g | 5 gbest |
| ↓ lower better | 38.1 mmbest | 42.4 mm |
| ↓ lower better | 20.7 mm | 13.2 mmbest |
| ↓ lower better | 9.4 mm | 6.6 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(1) | ||
Write Speed (MB/s) | 75 MB/s | 60 MB/s |
Security(1) | ||
Encryption Support | false | true |
Physical(4) | ||
Weight (g) | 9.1 g | 5 g |
Length (mm) | 38.1 mm | 42.4 mm |
Width (mm) | 20.7 mm | 13.2 mm |
Height (mm) | 9.4 mm | 6.6 mm |
Connectivity(1) | ||
USB Interface | USB 3.1 Gen 1 | USB-A 3.0 |
Compatibility(1) | ||
Operating System Compatibility | Windows; macOS; Android | Windows, macOS |
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.”
Retailer editors highlight the Ultra Flair's fast USB 3.0 performance, sturdy metal construction, built-in encryption and generous 5-year warranty, positioning it as a reliable mid-tier flash drive for everyday use.
Users rate the drive highly for speed, durability and security, but note slower write speeds, occasional early failures, and the need to install SecureAccess software.
