I used a Sony MPF920-Z Drive at $24.99 at CompUSA. I paid a little extra to get interchangeable faceplates which I used the black one. If you need to replace the floppy drive make sure the new drive's power connector is located in the opposite corner of the data connector (for PSR-740). On the Sony drive the power connector was in the center of the drive which made for a tight squeeze because there is a part of the case that dropped down right where the cable needed to go. I was able to squeeze the connection together but it almost didn't make it.