Gizmo Dorks 5 in 1 Card Reader OTG Connection Kit with Carabiner Key Chain for the Samsung Galaxy Tab 8.9 & 10.1 (P7310/P7510) PortaCell 5 in 1 Samsung Galaxy Tab USB OTG Camera Connection Kit Compatible with Galaxy Tab 7.7, Galaxy Tab 8.9 and Galaxy Tab 10.1 Transfer photos from a photo camera via USB cable or directly from an SD card to your Samsung Galaxy Tab Use an external USB keyboard, USB mouse or USB Flash Disk with your Galaxy Tab. Support MS. SD. SDHC. MMC. MMC2. RS MMC. UITRA2 SD. EXTREME SD .. EXTREME 3 SD, TF (Micro-SD). Support usb hard disk (The hard disk must have external power).