
Configuration Guidelines
The cable topology rules for Token Ring are shown below:
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  | 
  | 
  | 
  | 
Power Supply and Fuse
The Switch 2000 TR automatically adjusts to the sup- plied voltage. The fuse is suitable for either 
Replacing the Fuse
Refer to Figure 
■ 250 volts — 4A Slo-Blo 
1Power down the Switch 2000 TR by removing the AC power cord or the Redundant Power System cords.
2Gently pry open the fuse holder cover with a small 
Installing the   | 
Fuse location
AC connector
Figure 2-1 Switch 2000 TR Fuse Location
3Slide out the fuse holder drawer and remove the fuse.
4Install the replacement fuse and close the fuse drawer.
5
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
■