Compatible with USB version 2.0 Supper high speed transfer rate Aluminium Alloy crust Support MS/MSII Card and SM/XD Card and MD/CF cards and MM/SD Cards Compatible with Windows 98, Windows 2000 and Mac Hot plug and play via USB port No external power supply required Provide LED indicator High speed data transfer up to 480Mbps/ Full speed 12Mbps/ low speed 1.5Mbps Size: 96mm(L) x 67mm(W) x 15mm(H