
Lexar D400 128GB
Score: 81/100
Kingston DataTraveler DuoG2 256GB
Score: 64/100Rankings

The Lexar JumpDrive D400 128 GB offers a metal swivel design, dual USB-C/USB-A connectivity and built-in 256-bit AES encryption, making it a secure and versatile portable storage option. Real-world performance is solid for reads, but write speeds lag and occasional USB-2.0 operation can be a drawback.

The Kingston DataTraveler DuoG2 256 GB delivers versatile dual-connector functionality and ample storage in a compact plastic body, backed by a five-year warranty, though it lacks encryption and may feel slower than expected.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GB | 256 GBbest | |
130 MB/sbest | — | |
60 monthsbest | 60 monthsbest | |
| ↓ lower better | 17.35 g | 10 gbest |
| ↓ lower better | 60.6 mmbest | 64 mm |
| ↓ lower better | 16.2 mmbest | 21.2 mm |
| ↓ lower better | 9.7 mm | 1 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 128 GB | 256 GB |
Security(1) | ||
Encryption Support | true | false |
Physical(5) | ||
Weight (g) | 17.35 g | 10 g |
Length (mm) | 60.6 mm | 64 mm |
Width (mm) | 16.2 mm | 21.2 mm |
Height (mm) | 9.7 mm | 1 mm |
Material | Metal | Plastic |
Connectivity(1) | ||
USB Interface | USB-C/USB-A 3.2 Gen1 | USB 3.2 Gen 1 |
Compatibility(1) | ||
Operating System Compatibility | Android, Windows, macOS | Windows, macOS, Linux, Chrome OS |


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

Professional commentary emphasizes the Lexar D400's strong build quality, dual-connector flexibility, and cross-platform support, noting its rigorous testing and inclusion of DataShield encryption as positives. However, reviewers point out that the encryption is software-only and that the product lacks extensive third-party reviews, leaving some uncertainty about real-world performance consistency.
Everyday users generally appreciate the dual-connector design, metal durability, and keyring convenience, often noting that it works straight out of the box with Android phones and Windows PCs. Common complaints revolve around a tight USB-A connector, slower-than-expected write speeds, occasional defective units, and some drives operating at USB 2.0 speeds.

Professional reviewers describe the DuoG2 as an innovative and versatile flash drive that solves the compatibility gap between legacy USB-A and modern USB-C devices. They highlight its dual-connector design, cap-less sliding mechanism, and Kingston's reliable brand reputation, while noting that it is positioned as a practical, no-frills tool rather than a high-performance or secure storage solution.
Everyday users praise the drive for its convenience, ease of use, and sufficient capacity, noting that it works seamlessly across multiple platforms. Common complaints focus on slower transfer speeds than expected, the plastic build quality, occasional cap stiffness, and the absence of security features.
“coolest USB flash drive”

“is 2.0”

“Great for switching between laptop and phone”

