MDTC-B003 mini card reader 1, 2 slots,T-flash/Micro SD,M2 . 2,USB2. ... :M2/T-Flash/Micro SDLED statusinsertion card is constant bright, read-write flickersSupport OS:WINDOWS 98SE/WINDOWS ME/2000/XP Linux2.4.X ... Mac OS10.0 .or higher.Size:32mm(L)x16mm(W)x7mm(H)StandardsFCC, CE ... ,Low power consumption, suitable for desktop and notebook MDTC-B003 usb card reader