Support for SD / T - Flash CardTransfer rate: USB2.0, 480Mb / sOperation Voltage: 2.7V - 3.6V DC USB portDimensions: approx. 55 x 16 x 10 mm / 2.2 x 0.6 x 0.4 inchesUSB interface: mini USB / USBCard reader: SD / mini SD card Easy installation Plug and Play device, no need external power Read and write flash LED light Support for charging while connected to the charger PC operating systems: Windows 20002003, XP, Vista, 7, and Linux 2.4 or above 10.45. Support for Galaxy SII i9100, SII i9220, 9300 SIII, Note II, Ericsson, new one, Butterfly, Support smartphone and tablet with OTG function, mini USB port Material: ABS Color: black Package Includes: 1 x USB OTG SD Card Reader Note:Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/-1-3cm.