It might be a lack of sufficient power being provided to the A500's USB port.
Your idea is something that had never even occurred to me. I use a G11 keyboard too, and I have my cordless mouse's Bluetooth dongle plugged into one of the G11's USB ports. I'll have to see if it might actually work plugged into the A500. Wouldn't you need a driver of some sort? I don't suppose any of my programmed macros could be utilized.
The G11 keyboard works very well! But I can't think of an Android app that might utilize a mouse? So I couldn't test trying to use the mouse. The tablet isn't stock ROM anymore, so I don't have the game mentioned above installed anymore.
I tested a Logitech cordless mouse with a USB Dongle in my A500. It worked with no problems. I have since purchased a Logitech bluetooth mouse, it works as well. The only problem is that I have not been able to find an application to control the size and color of the cursor. The cursor is very small and sometimes it is hard to find. I have not found an application that the mouse would not work in, but I don't play games.
