3Com Fast EtherLink XL PCI 10/100BASE-TX Quick Start Manual - Page 7
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100BASE-FX and 10/100BASE-TX Fast Ethernet Switching Modules Quick Start Guide
Installing the Module
Consider the following slot restrictions when you choose a chassis slot
for Switching Modules:
Slots 8 and 9 are reserved only for switch fabric modules, which are
1.5 inches in width. You cannot install FEN Interface Modules in
these slots.
Slots 13 through 16 have only one connection to the backplane.
The 100BASE-FX and 10/100BASE-TX Switching Modules have two
backplane ports. The second backplane port on the 100BASE-FX
module is for future use, and if necessary, can be installed in slots
13 through 16 without affecting its bandwidth. Install the
10/100BASE-TX module in other slots that support both ports.
To install a Fast Ethernet Switching Module:
1 Before you start the installation process, read the "Safety Precautions"
section earlier in this document.
2 To expose a slot for the module, remove a blank faceplate from a
chassis slot.
You can install the module in any slot except slots 8 and 9.
3 Open the module ejector handles.
4 Hold the module vertically with the LEDs at the top and then insert the
module into the guides at the top and bottom of the slot.
CAUTION: Be careful not to twist or bend the module when you insert
it.
5 Slide the module into the chassis by pushing firmly at the top and
bottom of the front panel (Figure 2).
WARNING: Hazardous energy levels exist inside of the chassis. Do not
place hands or objects into the chassis or touch components on an
inserted module.
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