
Apricorn Aegis Secure Key 3 NXC 4GB-Black
Score: 80/100
Corsair Flash Padlock 3 256GB Black
Score: 65/100Rankings

The Apricorn Aegis Secure Key 3 NXC 4 GB combines fast USB-C performance with 256-bit AES encryption and IP68 waterproofing in a compact aluminum case. Its tiny 4 GB capacity and need for periodic battery charging limit broader use. Best for security-critical tasks requiring a tiny, encrypted USB-C device.

The Corsair Flash Padlock 3 256 GB is a security-focused USB drive with hardware AES encryption and a built-in keypad. Its transfer speeds are modest and the form factor is bulky, which may deter users needing fast data movement. Best for travelers or shared-workstation users who prioritize security over speed.
| Attribute | ![]() | ![]() |
|---|---|---|
4 GB | 256 GBbest | |
171 MB/sbest | — | |
160 MB/sbest | 8 MB/s | |
| ↓ lower better | 22 gbest | 22 gbest |
3 years | 5 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Storage Capacity (GB) | 4 GB | 256 GB |
Performance(2) | ||
Read Speed (MB/s) | 171 MB/s | 15-18 MB/s |
Write Speed (MB/s) | 160 MB/s | 8 MB/s |
Connectivity(2) | ||
USB Version | USB 3.2 Gen 1 | USB 3.0 |
Interface | USB Type-C | USB 3.0 |
General(2) | ||
Warranty (years) | 3 years | 5 years |
OS Compatibility | Windows, macOS, Linux, Android, Chrome OS, Symbian, embedded systems | Windows, macOS, Linux |
Build & Design(2) | ||
Dimensions (L×W×H) (mm) | 81x18.4x9.5 mm | 86×26×14 mm mm |
Material | Aluminum | Ruggedised rubber |

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

Professional reviewers and editors are not directly quoted in the available sources; the product is presented primarily through manufacturer claims emphasizing FIPS 140‑2 Level 3 compliance, TAA compliance, and the AegisWare firmware’s malware resistance.
No consumer reviews or ratings were found in the research, so everyday user sentiment cannot be determined from the available data.

“Performance good enough for general use; easy setup.”

“Good price-quality security ratio; usability strong but design humble.”

“Cross-platform versatility shines, but slow (15.4 MB/s avg read); redundant PIN entry.”


Professional reviewers commend the Padlock's strong 256-bit AES hardware encryption and its driver-free, cross-platform operation, noting that it delivers adequate read speeds for typical tasks. However, they criticize its sluggish transfer rates, bulky design that can block other ports, and the short auto-lock window that leaves a brief period of vulnerability.
Everyday users appreciate the convenience of a built-in keypad and the ability to use the drive on any OS without extra software, but many express frustration over slow transfer speeds, the device's large size, a loose cap, and concerns about data loss if the PIN is forgotten or the drive is physically tampered with.