I'm not sure what you mean by 'five slots' but if your talking about the machine case, this is irrelevant to your predicament. In fact from the info you provided, you need to find the two pins labeled j50, and jump them. That is put a jumper accross them so the drive is identified as a master. You also then need to plug the drive into the correct connector on the ribbon cable. Some it doesn't matter, some label each connector with master or slave.
What do you mean by 'five slots?'
-bear
here is a link to the manual for that model drive on maxtor's site:
LINK