Apricorn
500GB Aegis Padlock USB 3.0 256-bit AES XTS Hardware Encrypted Portable External Hard Drive (A25-3PL256-500)
*Price sourced from Amazon.com. Last updated 2026-07-07. Price and availability subject to change.
Bottom line: The 500GB Aegis Padlock USB 3.0 256-bit AES XTS Hardware Encrypted Portable External Hard Drive (A25-3PL256-500) is a niche pick — read recent reviews before buying in the external storage category, priced around $153.88. Read recent reviews carefully before committing.
Looking for an effortless way to secure your data while taking advantage of the fastest USB 3.0 speeds? Look no further than the Aegis Padlock 3.0. Featuring your choice of AES-XTS 128-bit or 256-bit hardware encryption the Aegis Padlock 3.0 seamlessly encrypts all data on the drive in real-time, keeping your data safe even if the hard drive is removed from its enclosure. With a super speed USB 3.0 interface, you can now access your files faster than ever before. The Aegis Padlock 3.0 is also backwards compatible with USB 2.0 and 1.1 ports. With no software installation required for setup or…
SpecPicks Verdict
SpecPicks classifies Apricorn 500GB Aegis Padlock USB 3.0 256-bit AES XTS Hardware… as a niche pick — read recent reviews before buying in the external storage category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. Apricorn's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Utilizes Military Grade FIPS PUB 197 Validated Encryption Algorithm
- ✓ Backed by Apricorn's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Utilizes Military Grade FIPS PUB 197 Validated Encryption Algorithm
- Super fast USB 3.0 Connection - Data transfer speeds up to 10X faster than USB 2.0
- Software Free Design - With no admin rights needed
- Sealed from Physical Attacks by Tough Epoxy Coating
- Brute Force Self Destruct Feature
- Wear Resistant Key Pad
Full Specifications
| Brand | Apricorn |
|---|---|
| Color | Multicolor |
| Model Name | Padlock |
| Read Speed | 600 Megabytes Per Second |
| Unit Count | 1.0 Count |
| Form Factor | 2.5-inch |
| Media Speed | 600 MB/s |
| Connectivity | USB |
| Model Number | A25-3PL256-500 |
| Built-In Media | unit |
| Hard-Drive Size | 500 GB |
| Mfr Part Number | A25-3PL256-500 |
| Number of Items | 1 |
| Special Feature | Portable |
Ready to buy?
Apricorn 500GB Aegis Padlock USB 3.0 256-bit AES XTS Hardware Encrypted Portable External Hard Drive (A25-3PL256-500) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-07-07. Price and availability subject to change.
Related External Storage
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best 1440p Gaming GPUs in 2026
- Best Retro Handhelds in 2026 — From $35 to $500
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- How to Build a Windows 98 Retro PC in 2026
More reviews from the SpecPicks archive
Browse all reviews →- Quiet RTX 3060 12GB Local LLM Box: Build Notes from a Real Setup
- Best Gaming Headset Under $50 for Console + PC (2026)
- AMD Ryzen 9 9950X3D2 Runs Faster on Linux Than Windows 11
- Intel Axes BigDL: Local-LLM Picks for Consumer GPUs in 2026
- Best Mouse Pad for Office Productivity and Long Hours (2026)
- Ryzen 7 5800X vs Ryzen 5 5600G for 1080p Gaming and Light Local LLM Work
- llama.cpp vs vLLM for Single-User Local Chat on an RTX 3060 (2026)
- Ollama vs vLLM for Single-User Local Chat on an RTX 3060 12GB (2026)
- OpenAI Codex 'Watch Once, Repeat Forever': What It Means for Local Coding Rigs
- Network-Wide Ad Blocking with Pi-hole on a Raspberry Pi 4 8GB (2026 Setup)
- Memory Prices Climb as Samsung and SK Hynix Pour $590B Into Chips
- Hyperscalers May Soon Outrun Their Cash Flow on AI Buildout
- Raspberry Pi 5 16GB Ships — Is the Pi 4 8GB Still Worth It?
- Intelligence Index v4.1: The Agentic-Benchmark Shift and Your Local Rig
- Raspberry Pi 5 + Hailo-8L vs Coral Dual Edge TPU: Which AI Accelerator HAT Wins in 2026?
- Ryzen 7 5800X vs Ryzen 7 5700X for 1440p Gaming: Is the Premium Worth It?
- Ollama vs llama.cpp vs vLLM — which local LLM runtime wins in 2026?
- 8BitDo Pro 2 vs DualSense: Best Controller for PC Gaming in 2026
- GeForce 4 Ti 4600 Won't Boot Past POST: AGP Voltage and BIOS Field Guide
- Air vs AIO for the Ryzen 7 5800X: Noctua NH-U12S vs CoolerMaster ML240L
- Imaging and Restoring Vintage IDE Drives in 2026: SATA/IDE-to-USB Adapters Compared
- Sound Blaster Audigy 2 ZS Won't Install on Windows XP: Driver Hunt + Fix
- Self-Host Home Assistant on a Raspberry Pi 4 8GB: Setup and Real Limits
- Samsung Unveils World's First 4K 360Hz QD-OLED Panel