HP ProDesk 405 G2 Microtower Maintenance And Service Manual page 64

Power supply connectors connect to the drives as follows:
● P3 connector: primary hard drive
●
P5 connector: primary optical drive
●
P4 connector: secondary hard drive
4. From the outside rear of the chassis, remove the four silver Torx T15 screws that secure the power
supply to the chassis.
56 Chapter 5 Removal and replacement procedures: Microtower