Dell OptiPlex SX270 - Manual (Page 17)

1. If a security device is installed in the security cable slot, remove the device.
2. Grasp the top piece of the cable cover and slide it to the left until it stops, and then lift it up and away.
3. To remove the bottom piece of the cable cover, while pressing the lever, slide the piece to the left until it stops, and then lift it up and away.
Mounting Plate
Attaching the Computer to the Mounting Plate
NOTICE: When installing the computer in the hanging orientation, avoid locations where it will be bumped by a user's legs or chair.
NOTE: Before attaching the mounting plate to a surface, first orient yourself with how the stand attaches to the mounting plate.