@BoingBoss
Congratulations on the A500T..a rare breed. Anyway, my setup uses the original A500 keyboard (I left it in the A500 caseworks. If you use an old monitor cable (you need about six or seven wires in the cable) you can run all of the motherboard to keyboard signals out to the original keyboard and thereby have the power, drive and keyboard reset signals. I think it works really nice (plus my keyboard, though big, still has the C= and Amiga signs).