After starting up my G4 (AGP 400MHz) it doesn't recognise the keyboard which is a Macally ikeyslim.

The keyboard has two USB sockets , one has the mouse in it the other has a USB stick, if I remove any of these Mac detects this and gives its warning message about removing USB devices.

Top get the keyboard to work I have to unplug it from the Mac USB socket and then reconnect it.

Any body got any ideas as to why the Mac initially doesn't recognise that it has the keyboard attached?