Cisco Systems 4948E, 4948E-F 4-7, 1Secure the power supply in the chassis with the captive installation screw., 2Attach the source DC leads to the terminal block in the following order:

4-7
Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide
OL-21561-02
Chapter 4 Removal and Replacement Procedures
Removing and Installing the DC-Input Power Supply
Figure 4-2 Installing the DC-Input Power Supply
1Secure the power supply in the chassis with the captive
installation screw.
2Attach the source DC leads to the terminal block in the
following order:
• Ground
• (–) negative
• (+) positive
278172
INPUT
OK
OUTPUT
OK
PWR - C49-300DC
-48 To -60VAC
8A
+
-
INPUT
OK
OUTPUT
OK
PWR - C49-300DC
-48 To -60VAC
8A
+
-
+
-
INPUT
OK
OUTPUT
OK
PWR - C49-300DC
-48 To -60VAC
8A
2
1
+
-
INPUT
OK
OUTPUT
OK
PWR - C49-300DC
-48 To -60VAC
8A