HP EliteDesk 800 Hardware Reference Manual page 46

13. Slide the replacement battery into position, positive side up. The battery holder automatically secures
the battery in the proper position.
14. Set the hard drive cage (1) into the chassis.
15. Secure the hard drive cage to the chassis with the three screws (2).
16. If your model is an EliteDesk 800 65W, replace the secondary fan under the hard drive.
a. Set the fan in place in the hard drive cage (1).
b. Fasten the three screws to secure the fan to the chassis (2).
c. Connect the fan plug to the system board (3).
17. Align the hard drive guide screws with the slots on the hard drive cage, press the hard drive down into
the cage, and then slide it forward (1) until it stops and locks in place.
40 Chapter 3 Hardware upgrades