Specifications

SERVSWITCH™ DUO AND SERVSWITCH™ QUADRO

5 through 8, 9 through 12, and 13 through 16. You could run two cables from

an eight-port master Duo to each of four subsidiary Duos: to one Duo each

from CPU ports 1 and 2, 3 and 4, 5 and 6, and 7 and 8. The Duo/Quadro will

treat these sets of ports as a unit when one of the users selects a CPU, routing

the KVM link through whichever of the two or four ports is free at the

moment.

• If it’s OK that not all users on the master have access to all CPUs in the system

at the same time, you can run extension cabling from one user port on a

subsidiary Duo to one CPU port on a master Duo or Quadro. Similarly, you

can run one, two, or three sets of extension cabling from the user ports of a

subsidiary Quadro to consecutively numbered CPU ports on a master Quadro.

(The Quadro will treat the sets of two or three ports as a unit for CPU selection.)

The extension cabling can be either separate male-to-male keyboard-, mouse-,

and video-extension cables, or our three-in-one Premium KVM CPU Cable. Video

quality will be at its highest if you can keep this cabling as short as you can (no

longer than 10 ft. [3 m] if possible), but Premium KVM CPU Cable will work at

longer distances. Whenever you make a set of cascade links between two Duos/

Quadros, make sure that the extension cables are approximately the same length.

Keep in mind, though, that if you are only running coaxial cable, the total cable

length from any user station to any CPU should not exceed 100 ft. [30 m] from end

to end between any CPU and any user station. So if any of the layer of subsidiary

Duos/Quadros that you’ll be directly attaching to the master Duo/Quadro are

more than about 30 ft. (9 m) away from it, you might want to use twisted-pair cable

and a ServSwitch Duo Extender to interconnect the two Duos/Quadros. To do this,

attach the twisted-pair cable to the RJ-45 jack in the subsidiary Duo’s user port #1

or the subsidiary Quadro’s user port #1 or #3. Run it to the master Duo’s/Quadro’s

site and plug it into the Duo Extender. Then run extension cabling (as short as

possible) from the Extender’s user-port keyboard, mouse, and monitor connectors

to the matching connectors in the master Duo’s/Quadro’s CPU ports. (In this

situation, if it’s vital that all users be able to access that subsidiary Duo/Quadro at

the same time, you can use one of our other ServSwitch brand KVM extenders to

connect the subsidiary Duo’s user port #2 or the subsidiary Quadro’s user ports #2

and #4 to other CPU ports on the master.)

The master forms the first layer of your cascade, and the subsidiary Duos/Quadros

directly attached to it form the second layer. You can extend your cascade to a third

and then a fourth layer by repeating the process and attaching additional subsidiary

Duos/Quadros to those you’ve already installed. Four layers is the maximum

cascaded configuration, but even if you maintain access and control for all users on

the master throughout such a cascade, it could still support up to 8192 computers.