Cisco 4948 - Catalyst Switch Installation Manual page 26

Fan Tray
The WS-X4993-F fan tray is keyed to prevent insertion into the Catalyst 4948E switch chassis.
Note
Figure 1-5
2
1 Backplane connector
2
Captive installation screw (2X)
The fan tray draws in air through vents at the rear of the chassis and exhausts it through the front of the
chassis as shown in
Figure 1-6
Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide
1-10
Catalyst 4948E-F Fan Tray
Figure 1-6.
Catalyst 4948E-F Chassis Airflow
1
3
3 12 VDC fan (4X). Air is drawn in from the
rear of the chassis and exhausted through the
front of the chassis.
Chapter 1 Product Overview
OL-21561-02