USB Keyboard/Mouse

[jfelten]

So I decided to play around a bit more with the USB drivers. I purchased myself a 7-port USB 2.0 hub and plugged in 2 devices: a keyboard and a mouse (both of which I had verified beforehand were compatible on their own). Then, I plugged the hub into the calculator and ran USBOpen(). Yet to my surprise, only up to one of the connected devices would show up. The device that was output from a given scan was not random, but rather the first device connected to the hub. Unplugging this device causes the calculator to recognize it as empty, even though there are other devices connected, and unplugging all devices "resets" this mechanism so that the next device connected to the hub will show up on the calculator. Moreover, keeping the hub plugged in crashes the calculator after a few seconds (often the moment the "low battery" message pops up). Is this issue already known and are there any workarounds?