Apricorn Aegis Padlock 512 GB portable SSD A25-3PL256-S512

Hardware-encrypted 512 GB USB 3.0 SSD

The Apricorn Aegis Padlock is a 512 GB external solid-state drive that connects through an integrated USB 3.0 cable. It delivers sequential reads up to 160 MB/s and writes up to 145 MB/s with an 8 MB cache buffer. A built-in keypad provides PIN-code hardware encryption without requiring software installation. The package includes a Y-auxiliary power cable, travel pouch and quick-start guide.

For users who need hardware encryption on the move

This drive suits professionals who must protect confidential files while travelling between workstations. The keypad unlocks the drive before the OS loads, so it works on any device with a USB port. Buyers who want higher throughput for large media workloads should look at faster interfaces. Users who prefer software-only encryption or do not need a physical keypad may find simpler alternatives.

Keypad PIN unlock before OS boot

The defining specification is the on-drive keypad that authenticates the user before the operating system starts. This hardware-based approach encrypts every sector without host software and works across Windows, macOS and Linux. If your workflow requires this pre-boot unlock method, the Aegis Padlock matches the requirement; otherwise a standard USB 3.0 SSD without a keypad may be more appropriate.