
Lexar D400 128GB
Score: 81/100
Mecheer 8GB
Score: 35/100Rankings

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 MECHEER 8 GB 10-pack offers a rugged metal swivel design and low price, making it suitable for classrooms and bulk distribution. However its USB 2.0 interface and limited capacity restrict it to basic file sharing tasks.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GBbest | 8 GB | |
130 MB/sbest | 30 MB/s | |
— | 15 MB/sbest | |
60 monthsbest | 12 months | |
| ↓ lower better | 17.35 gbest | 136 g |
| ↓ lower better | 60.6 mm | 55.9 mmbest |
| ↓ lower better | 16.2 mmbest | 17.8 mm |
| ↓ lower better | 9.7 mm | 2.5 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 128 GB | 8 GB |
Performance(1) | ||
Read Speed (MB/s) | 130 MB/s | 30 MB/s |
Warranty(1) | ||
Warranty Period (months) | 60 months | 12 months |
Security(1) | ||
Encryption Support | true | false |
Physical(4) | ||
Weight (g) | 17.35 g | 136 g |
Length (mm) | 60.6 mm | 55.9 mm |
Width (mm) | 16.2 mm | 17.8 mm |
Height (mm) | 9.7 mm | 2.5 mm |
Connectivity(1) | ||
USB Interface | USB-C/USB-A 3.2 Gen1 | USB 2.0 |
Compatibility(1) | ||
Operating System Compatibility | Android, Windows, macOS | Windows, macOS, Linux |


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 note the capless swivel metal housing is a durability win for bulk-use, but criticize the slow USB 2.0 speeds and lack of security features.
Everyday users like the sturdy design and low cost but complain about slow transfers and occasional failures.
“coolest USB flash drive”

“is 2.0”

“Perfect for school projects-my kids use them all the time.”


