I have a very basic non-multimedia USB keyboard and a USB->Xbox adapter, such as what you might use for a soft mod. I can't seem to get it to work with PSO, or even the network settings page (I tried typing in 192.168 etc). I've also tried using the X3CP faceplate USB ports but same problem there too, no reaction.
Am I doing something wrong? Would be cool to be able to type in PSO or use it in Xbmc4Gamers.