Dell OptiPlex SX260 - Manual (Page 47)

3. Slide the device into the module bay.
4. If desired, you may lock the device in the module bay by moving the module locking switch to the locked position.
5. Replace the hard-drive door.
To remove a floppy drive, follow steps 1 and 2 in the previous procedure.
Installing a CD/DVD Device When Your Computer Is Running
Microsoft Windows® XP
To install a CD/DVD device or second hard drive:
1. Double-click the Safely Remove Hardware icon on the taskbar.
2. Click the device you want to eject.
3. If the module bay is locked, open the hard-drive door and move the module locking switch to the unlocked position.
1 module bay
2 airbay
3 module eject button