Android 3.1 brought all new options for USB Hosting mode which include the use of a mouse, keyboard or storage device. The trick was getting the USB device connected to your tablet. There is an adapter that goes micro-USB male to regular USB female which will add a computer like USB port to your tablet. However the Samsung Galaxy Tab 10.1 uses a proprietary 30 pin connector and lacks a micro USB port.
More after the break
That’s all fixed now with an accessory from Samsung Mobile. The USB adapter has a 30 pin connection on one side and a regular USB port on the other which makes all those devices a breeze to plug into the tablet. USB host is a game changer in our opinion for a tablet computer. We can’t wait til CE Week NY when we are going to try off-loading photos from a digital camera via card reader to the tablet for easy uploading to word press. We’ve tried it already and it works.
The USB adapter costs $19.99 but it’s on back order. A call into Samsung’s PR department yielded an “any minute now” response.
source: Android Police