3Com TR - Manual (Page 31)

Installing the Slide-in Modules 2-3
Configuration Guidelines
The cable topology rules for Token Ring are shown
below:
Power Supply and Fuse
The Switch 2000 TR automatically adjusts to the sup-
plied voltage. The fuse is suitable for either 90-110V
A.C. or 220-240V A.C. A spare fuse is provided in the
fuse drawer.
Replacing the Fuse
Refer to Figure 2-1 for the location of the fuse. When
necessary, replace the Switch 2000 TR fuse with a
fuse that has the following specifications:
■ 250 volts — 4A Slo-Blo
1 Power down the Switch 2000 TR by removing the AC
power cord or the Redundant Power System cords.
2 Gently pry open the fuse holder cover with a small
flat-blade screwdriver.
Figure 2-1 Switch 2000 TR Fuse Location
3 Slide out the fuse holder drawer and remove the fuse.
4 Install the replacement fuse and close the fuse
drawer.
5 Re-insert the power cord and apply power.
Installing the Slide-in Modules
This section explains how to install the three optional
modules into a SuperStack II Switch 2000 TR device.
The modules are:
■ ATM
■ FDDI
■ TR-in-FE
Media 4 Mbps 16 Mbps
Category 3 UTP 660 ft/200m 330 ft/100m
Category 4, 5 UTP 1,320 ft/400m 660 ft/200m
Type 1 STP 2,000 ft/600m 1,000 ft/300m
Fuse location
AC connector