here are some merged pictures/details of the P3. This is the hard drive + spare slot
have found 3 spare IDE plugs, 2 primary (broad, grey and black) and one secondary (black/short)
this grey primary one [below] probably used to plug into one of two optical readers (only one dvd in place now):
the below black IDE plug probably slotted into the zip drive which i have now removed:
then there is this secondary(?) IDE plug which seems to have always been spare, it is shorter than the other two:
so which plug would i use for the recon HDD please - i'd guess the black broad one which used to connect the zip drive?
btw, there are other (not IDE) plugs and sockets on the mobo - love to know what they're doing there!