Two 5.25 inch media bays, one bay is occupied with an optical drive.
Two 3.5 inch drive bays for removable media or hard disk drives, one is occupied with a 3.5 inch diskette drive.
The power control button
The power on LED
The hard disk drive activity LED and these ports:
Two USB ports and space for an optional IEEE 1394
Located on the right side is the cover release button and the padlock loop.
Located on the rear of the system are the:
Power supply diagnostic LED's. The green LED indicates that the power supply is functioning correctly. The yellow LED indicates a power supply fault. NOTE: Refer to the HMM for expanded diagnostics information about the power supply LED's.
Voltage selection switch and the AC power connector
Optional serial connector on some models and these ports: