Connecting the 650W DC power supply
CAUTION: The power cord color code scheme in Figure 25: Connecting the 650W DC power supply on page 32 is
for illustration only. The cable delivered for your country/region might use a different color scheme. When you connect
the power cord, always identify the polarity symbol on its wires.
Procedure
1. Unpack the DC power cord, identify the plug for connecting to the power supply, orient the plug with the power receptacle
on the power supply, and insert the plug into the receptacle. See
Figure 25: Connecting the 650W DC power supply on
page 32.
The receptacle is foolproof. If you cannot insert the plug into the receptacle, reorient the plug rather than use excessive
force to push it in.
2. Use a cable tie to secure the power cord to the handle of the power supply, as shown in Figure 24: Connecting the 650W
3. Connect the other ends of the wires to the DC power source wiring terminals, with the negative wire (– or L–) to the
negative terminal (
–) and the positive wire (+ or M/N) to the positive terminal (+).
Figure 25: Connecting the 650W DC power supply
Verifying the installation
Procedure
1. After you complete the installation, verify the following information:
• There is enough space for heat dissipation around the switch, and the rack is stable.
• The grounding cable is securely connected.
• The correct power source is used.
• The power cords are correctly connected.
• All the interface cables are cabled indoors. If any cable is routed outdoors, verify that the socket strip with lightning
protection and lightning arresters for network ports have been correctly connected.
32 Installing the switch
