I have a Pentium 150 with an ExpertBoard 8551 motherboard and a Fujitsu M11623TAU 1.6 gig hard drive. I want to put in a second hard drive to increase disc space. I tried a Fujitsu 8.4 gig HD, but the tech at the store where I bought it tells me it won't work with this motherboard, and the biggest HD I can go to is a 2 gig, but they don't get them in anymore. I got my money back for the 8.4, so that isn't the problem. I need to know my options for adding a second slave drive, or upgrading the master drive. Do you have any suggestions?