Hard Drive Replacement for 400MHZ G4 Titanium PowerBook

Personally, I wouldn't buy a refurbished hard drive, as it means it has had issues already. A new drive isn't that expensive, and you're going to trust your data to it. But that's me ....

You want a 2.5" parallel ATA hard drive. They are sometimes known as IDE, PATA, ATA, ATA-5 and are all the same. What you DON'T want is a serial ATA or SATA drive, which has a different connector and won't fit. For speed, get 5400 rpm, which is the industry standard now, which will be quicker than the original hard drive in your Powerbook. Max size is 320GB in a Western Digital drive.

Garry: I just replied to your other post before reading this one. I'm sorry to hear that you've already wasted money on the Tibook, which will probably be a real disappointment for you. The display issue is serious and will be costly and time-consuming to repair. It isn't worth investing anything more in this old clunker than you already have. That said, either of the drives you've linked is compatible with it; the maximum size you can use in that model is 120GB. I fully agree with BGreg about the folly of buying a refurbished hard drive instead of a new one.