typically a combination 3.5-inch/5.25-inch diskette drive, a cartridge tape drive, and/or a CD ROM drive. The 3.5-inch drive bay can contain 1 half-height drive, typically a 3.5-inch diskette drive or a tape drive. In addition, the hard-disk drive bracket next to the power supply can contain 1 or 2 IDE or SCSI hard-disk drives.