Humm... ok, then maybe it isn't a simple swap. I don't have a portable, so I have to go off the PDF tech guide I have. It doesn't indicate anything special about the drive, so I made what must be a wrong assumption that it was the standard SCSI drive Apple used in everything else of that era. The only picture of the drive in the PDF doesn't show enough detail to know what the connector is like. And Seagate doesn't seem to admit the CP-3045 (taken from the pic on ebay) exists. I did however locate a page on lowendmac.com that shows how to build a 50 pin to 34 pin converter cable to replace the Portable's drive with a more standard 50 pin SCSI drive. It was listed under the pages for the Mac Portable. -chris <http://www.mythtech.net>