Akasa White Combo Card Reader. Interface type: USB. Operating temperature range (T-T): 0 - 55 °C, Storage temperature range (T-T): 0 - 64 °C. Dimensions (WxDxH): 102 x 54 x 18 mm. Power supply type: DC, Compatible operating systems: Windows 98/XP/2000/Me; Mac OS 8.6+ /OSX