Maintenance and Service Guide HP ProDesk 400 G1 Microtower HP ProDesk 480 G1 Microtower HP ProDesk 490 G1 Microtower HP ProDesk 400 G1 Small Form Factor

P4 connector: secondary hard drive
P6 connector: secondary optical drive
5. From the outside rear of the chassis, remove the four silver Torx T15 screws that connect the power
supply to the chassis.
88 Chapter 5 Removal and replacement procedures: Microtower