Dell OptiPlex 330 (Late 2007) - Manual (Page 43)

3. Push down on the clamp release tab to release the bezel clamps from the front panel.
4. Rotate and pull the bezel away from the front of the computer to release bezel clamps from bezel clamp slot.
5. Set aside the bezel in a secure location.
Replacing the Bezel
1. Align and insert the bezel clamps in the bezel clamp slots.
2. Rotate the bezel toward the computer until it snaps into place on the front panel.
Drives
Your computer supports a combination of these devices:
l Up to two serial ATA hard drives
l One optional floppy drive
l Up to two optical drives
Recommended Drive Cable Connections
l Connect serial ATA hard drives to connectors labeled "SATA0" or "SATA1" on the system board.
l Connect serial ATA CD or DVD drives to connectors labeled "SATA2 " or "SATA3" on the system board.
Connecting Drive Cables
When you install a drive, you connect two cables—a DC power cable and a data cable—to the back of the drive.
1 optical drive bays (2) 2 floppy drive (optional)
3 hard drive bays (2)