3Com 10-Port 100BASE-FX Quick Start Manual page 17

10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide
Figure 2 Installing a FEN Switching Module into a 7-Slot Chassis
20-port Fast Ethernet
7
6
5
4
3
2
1
Switching Module
R
9
8
Spring-loaded
screws
17
®
CoreBuilder 9000