Specifications

37
CHAPTER 3: Installation and Preconfiguration
3.4.2 B
US AND
U
SER
-P
ORT
(KVM) N
UMBERING
3.4.2.A In 4-User Models
In 4-User ServSwitch Affinity models, the numbering of the user ports, users, buses,
and keyboard/video/mouse (KVM) user stations is fixed, and in a normal
daisychain with only 4-User units, each of these numbers will always be equal to the
others. KVM 1 and KVM 2 are Users 1 and 2 on buses 1 and 2, attached to the Port
Cards in slots 1 and 2 respectively; KVM 3 and KVM 4 are Users 3 and 4 on buses 3
and 4, attached to the Port Cards in slots 3 and 4 respectively. (Refer to Figures 2-2
and 2-3 in Section 2.3 to see where these slots are.) This numbering can be thrown
out of equivalence in an abnormally cabled mixed daisychain; see Section 3.4.4.
On the 4-Port Expansion Card, input port IN 1 and output port OUT 1 carry all
of the keyboard, mouse, and system-control signals, as well as the video signals for
KVM 1 and KVM 2. Input port IN 2 and output port OUT 2 carry the video signals
for KVM 3 and KVM 4. Note that even if you have no users attached to the Port
Cards in slots 1 and 2, you still need to run expansion cables to IN 1 and/or OUT 1,
because all of the system’s control information is expressed on those ports and the
daisychain won’t work if that information isn’t passed between the Affinity units.
3.4.2.B In 8-User and 16-User Models
In the 8-User and 16-User ServSwitch Affinity models, the numbering of the buses,
user ports, and KVM user stations is user-selectable: 8-Port Expansion Cards can be
set so that their chassis’ buses and KVM ports are numbered 1 through 4 or 5
through 8 (or, when you use two cards together in a 16-User chassis, 9 through 12
or 13 through16). Each KVM number will be equal to the user and bus numbers;
for example, KVM 1 and 2 are Users 1 and 2 on buses 1 and 2. On the Expansion
Card in an 8-User chassis, or on the bottom Expansion Card in a 16-User chassis:
Input port IN 1 and output port OUT 1 carry all of the keyboard, mouse, and
system-control signals, so you must run expansion cable to at least one of these
ports in order for your daisychained system to work. IN 1 and OUT 1 also carry
the video signals for KVM 1 and KVM 2 (attached to the Port Cards in slots 1
and 2 respectively if the Expansion Card is set for KVM 1 through 4).
Input port IN 2 and output port OUT 2 carry video signals for KVM 3 and
KVM 4 (attached to the Port Cards in slots 3 and 4 respectively if the
Expansion Card is set for KVM 1 through 4).
Input port IN 3 and output port OUT 3 carry video signals for KVM 5 and
KVM 6 (attached to the Port Cards in slots 1 and 2 respectively if the
Expansion Card is set for KVM 5 through 8).
Input port IN 4 and output port OUT 4 carry video signals for KVM 7 and
KVM 8 (Users 7 and 8, the Port Cards in slots 3 and 4 respectively if the
Expansion Card is set for KVM 5 through 8).