Part numbers XN-DCPWR-800W-F and XN-DCPWR-800W-R provide back-to-front
airow for cooling, and AC and DC power, respectively.
For installation instructions, see Replace Internal Power Supplies on page 67.
Turn on the Switch
An AC power cord is not included with the AC power supply. You can purchase AC
power cords for use in the US and Canada from Extreme Networks or from your local
supplier. The cord must meet the requirements listed in Power Cord Requirements for
AC-Powered Switches and AC Power Supplies on page 88.
For devices that are connected to AC power, connect the power cord to the AC power
input socket on the device (or power supply) and to an AC power outlet.
If the PSU LEDs do not turn green, refer to the 800 W AC Power Supply LEDs on page
79 topic for your device for troubleshooting information.
Connect Network Interface Cables
Use the appropriate type of cable to connect the ports of your switch to another switch
or router.
Cable Type
Maximum Distance
CAT5E 55 meters
CAT6 55 meters
CAT6A 100 meters
Working carefully, one port at a time, do the following:
1. Verify that you have identied the correct cable for the port.
2. Use an alcohol wipe or other appropriate cleaning agent to clean the cable
connectors; make sure they are free of dust, oil, and other contaminants.
3. If you are using optical ber cable, align the transmit (Tx) and receive (Rx) connectors
with the correct corresponding connectors on the switch or the I/O module.
4. Press the cable connectors into their mating connectors on the switch or I/O module
until the cable connector is rmly seated.
5. Repeat the preceding steps for the remaining cables on this or other switches or I/O
modules.
6. Dress and secure the cable bundle to provide appropriate strain relief and protection
against bends and kinks.
Install the Switch Turn on the Switch
Extreme 7720 Hardware Installation Guide 61
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