HP 53132A Assembly And Service Manual page 179

Chapter 4 Retrofitting Options
To Retrofit A5 DC Power Input Assembly (Option 002)
7 To install the new A4 AC Power Supply Assembly (53132-60207),
connect the ac power supply's shorter cable to connector J18 on
A1 Motherboard Assembly as shown in Figure 4-1B.
8 Insert and tighten the two TORX 10 screws (H2) to attach
A4 Power Supply Assembly to the rear of the chassis as shown in
Figure 4-1B.
9 Insert and tighten the TORX 15 screw (H1) into the upper-middle
of the chassis as shown in Figure 4-1B.
Assembly-Level Service Guide 4-7