
Lexar JumpDrive Dual Drive D400
Score: 76/100
SSK Dual USB-C 128GB
Score: 73/100Rankings

Lexar's D400 128 GB dual-drive features a metal swivel housing, keyring loop, and built-in 256-bit AES encryption, delivering read speeds up to 130 MB/s. Write performance is slower and limited user reviews make reliability uncertain. Perfect for professionals requiring secure, cross-device file transfers.

The SSK 128 GB dual USB-C/A drive promises ultra-fast 550 MB/s reads and a waterproof, shock-resistant metal case. In practice it overheats and can throttle, with hinge durability concerns. Fits casual photographers needing occasional high-speed transfers.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GBbest | 128 GBbest | |
130 MB/s | 550 MB/sbest | |
52 MB/s | 520 MB/sbest | |
| ↓ lower better | 17.8 gbest | 37 g |
5 yearsbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(2) | ||
Read Speed (MB/s) | 130 MB/s | 550 MB/s |
Write Speed (MB/s) | 52 MB/s | 520 MB/s |
Connectivity(2) | ||
USB Version | USB 3.2 Gen 1 | USB 3.2 Gen 2 |
Interface | USB Type-C, USB Type-A (swivel) | USB-A 3.2 Gen 2 and USB-C 3.2 Gen 2 |
General(1) | ||
OS Compatibility | Android, Windows, macOS | Computers, smart TVs, Android phones, iPhone 15, iPads, laptops, MacBooks |
Build & Design(3) | ||
Weight (g) | 17.8 g | 37 g |
Dimensions (L×W×H) (mm) | 4.0x0.4x5.45 mm | 78.0×20.5×8.6 mm mm |
Material | Metal | High-grade zinc alloy |

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

Tech reviewers consider the Lexar D400 a solid, secure option for users who need a durable, dual-connector flash drive. Its high read speeds and metal swivel design receive praise, while the relatively slow write performance and limited consumer feedback are noted as drawbacks.
Limited feedback; the few available sources provide no recurring praise or complaints, leaving reliability uncertain.


Professional reviewers, notably a Critical Reviews YouTube analysis, criticize the SSK drive for severe overheating, inconsistent sustained speeds, high power draw on iOS devices, and fragile USB-C hinge, concluding that despite its premium feel and advertised peak performance, the product suffers from reliability issues that outweigh its advantages.
Everyday users praise the dual-connector convenience and the solid, premium feel of the metal housing, but common complaints focus on rapid heating, speed throttling after short use, hinge durability problems, power-draw warnings on iPhone 15, and occasional early failures, making the drive suitable only for occasional light transfers.