Unlike most external SSDs, with the Addlink P21 ($87.44 for 1TB as tested), you can open up the enclosure and see what makes it tick. At heart, it's an M.2 SSD clad in a sturdy aluminum case.

Good 20Gbps performance and handsome looks are Addlink’s formula for the P21 external SSD. It also maintains solid numbers when writing off secondary cache. If you’re looking for better-than ...