A drive that is 5900RPM, Sata 2 or 3 and the same size or larger that is in the unit that you purchase.
*****I no longer work for Buffalo and I am not an admin or mod but I'm still happy to help!******
-My products "LS-WVL, CS-WVL, WZR-HP-G450H, WZR-HP-G300NH x 2, WHR-HP-G54"
PC, Custom build-Win7 Pro 64bit, Vertex 2 SSD, GTX 285 OCX, 6GB DDR3 3x , i7 2.66ghz, BluRay
