© Copyright IBM Corp. 2001 5
Type 9306 Models 4QS, 4QX, 9QS, 9QX, 9TS, 9TX
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
IBM PC Server expans ion rack models . . . . . . . . . . 5
Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Server selector conso le . . . . . . . . . . . . . . . . . . . . . . . . 6
Server selector unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Power distribution unit . . . . . . . . . . . . . . . . . . . . . . . 7
Cooling fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Sliding trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Single latch rail tra y. . . . . . . . . . . . . . . . . . . . . . . . . . 9
Dual latch rail tray . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0
Sliding rails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Keyboard tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Parts listing (Type 9306 – 19-inch) Models 9QS, 9TS
and 9QX, 9TX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Parts listing (Type 9306 – 24-inch) Models 4QS, 4QX
17
Features
The 9306 IBM PC Server Rack Enclosure, models 4QS, 9QS, 9TS come in three prim ary
models.
•19-inch Quad Primary Server Rack, Model 9QS
•19-inch Tri Primary Server Rack, Model 9TS
•24-inch Quad Primary Server Rack, Model 4QS
A Quad Primary Server Rack can house up to four IBM PC Servers. The Tri Primary
Server Rack can house up to three IBM PC Servers.
Both Quad and Tri Primary Server Racks provide a built in server selector which
connects to one set of console devices (monitor, keyboard, and mouse.) The ser ve r
selector works independently from the server's operating systems, enabling the
connected servers to run different operating systems.
These IBM 9306 PC Server Rack Enclosure models are shipped preassembled and pre-
cabled.

IBM PC Server expansion rack models

Three optional IBM PC Server Rack Expansion models are available to expand the
capacity of the IBM PC Server Rack Prim ary Enclosure. The opt ional IBM PC Server
Rack Expansion models are:
•19-inch Quad Expansion Rack, Model 9QX
•19-inch Tri Expansion Rack, Model 9TX
•24-inch Quad Expansion Rack, Model 4QX
The IBM PC Server Rack Expansion models allow the installation of up to four more
servers using the Primary IBM PC Server Rack monitor, keyboard, and mouse.
Locations
The following sections contain information on specific equipment locations.
Note: For instructions on how to power-off the rack, see “Powering off the rack” on
page 3.