3 easily. 4 more at considerable expense. Total 7. The third one goes above the Optical. The other 4 go in front of the processor fan vertically hooked to PCI card for SATA or ATA drives. -- Taylor Barcroft New Media Publisher, Editor, Video Journalist, Video Podcaster Santa Cruz CA, Beach of the Silicon Valley URL http://FutureMedia.org RSS http://feeds.feedburner.com/FutureMedia iTunes http://tinyurl.com/8ql87 barcroft (gizmo) kungax (Skype) kungag5 (iChat-AIM) On Sep 13, 2005, at 11:31 AM, Richard Gilmore wrote: > Haw many hard drives can I put in a Power Mac G5?