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ULTRAMATRIX E-SERIES MANUAL
 
19 
Switch Installation – Multiple units – “RING” topology 
A “RING” configuration is usually used when the users are connected 
to different UltraMatrix switches and need access to all computers.  In a 
“RING” configuration, users on any KVM station in the ring can access 
all the computers in the system on a first-come-first-serve basis. 
  
                       
 
Figure 5. Ring configuration 
The Units in Figure 5 can be any UltraMatrix model 
 
The “RING” installation procedure is very similar to installing a “BUS” 
configuration with the exception of removing jumper JP1 on the 
expansion cards on two Units and adding an expansion cable(s) from 
the first Unit to the last Unit. This additional expansion cable(s) from the 
first Unit to the last Unit creates the “RING”.   
 
 
 
 
 
 
All Units must be equipped with an expansion card(s).  
A KVM station on 
Unit #3 can access 
all computers. 
 
A KVM station on 
Unit #2 can access 
all computers. 
 
A KVM station on 
Unit #1 can access 
all computers. 
JP1 
off 
JP1 
on 
JP1 
off 
Unit #3 
CPUs
 
33 - 48 
Unit #2 
CPUs 
16 – 32 
Unit #1 
CPUs 
1 – 16 
 KVM station 
      (1 of 4) 
  CPU  
Cable 
 KVM  
Cable
In the example used in Figure 5, removing jumper JP1 on Unit #1 
and #3 divides the total ring cable length approximately in half.  
Unit #3 (IN) to Unit #1 (OUT) = 20’ 
Unit #3(OUT) to Unit #2 (IN), Unit #2 (OUT) to Unit #1 (IN) = 20’.