Elbox 4xIDE, yes Prin 2.5" and 3.5" are one and the same port and only one can be used at a time.
A600 can use external keyboard with numeric keypad.
I've had the same issue with a HDD once. Don't remember too well now if it was due to I had cut the reset line on the IDE cable (Pin1) or not... however I know the solusion was to use a different drive all together.
