GrayBean T-Flash SD(HC) MMC MS/MS DUO M2, 3 USB Ports,1 DC Input port for High Power Mobile HDD, USB 2.0 Keyboard, USB Mouse, USB Flash disk (OTG), Card Reader & USB HUB, Connection Kit For SamSung Galaxy Tab P7300 / P7310 / P7500 / 7510 / Compatible with Samsung Galaxy Tab 2 7inch/10inch