Yeah, I saw that a few years ago, the problem is that mine's an 8x unit, which uses a 50 pin notebook HDD connection, as documented by macdan.

Oh by the way, the hard drives are out, more than out, actually. One of them just doesn't power up. The other one powered up...and then killed my Performa's SCSI bus. I can no longer use any SCSI device on that machine. With no SCSI devices attached, and the internal CD-ROM drive (SCSI) out, the machine boots and works fine. However, connect ANY SCSI device, or reinstall the internal CD-ROM drive, and either it gets the death chimes, or boots and then crashes before loading extensions. Great. :-/