HP PCI Multiplexer Family Cabling, Diagnostics, and Troubleshooting Manual

Install Port Modules, Fan Out Cable & Power Supply
Mate and Mount Port Modules
Chapter 3 33
Mate and Mount Port Modules
Multiple port modules mate together to permit simple expansion of the
entire system without disassembling the computer. Included with each
port module are two L-shaped coupler brackets and twelve screws (8
black-anodized and 4 nickel-plated). Mate and mount the port modules
using the following procedure:
Group the modules by mating them together as shown in Figure 3-1.
Figure 3-1 Mating two port modules