Dell OptiPlex 745 User Manual page 133

2. Lay the computer on its side so that the system board is on the bottom of the inside of the computer.
NOTICE: Do not pull the drive out of the computer by the drive cables. Doing so may cause damage to cables and the cable connectors.
3. Pull up on the drive release latch and slide the drive towards the back of the computer. Then lift up to remove the drive from the computer.
1 drive release latch
2 optical drive
4. Disconnect the data cable from the system board connector (see
5. Disconnect the data cable from the back of the drive.
1 optical drive
2 drive bracket
3 data cable
Installing an Optical Drive
1. Unpack the drive and prepare it for installation.
Check the documentation that accompanied the drive to verify that the drive is configured for your computer.
System Board Components).