The Summit 770 W AC power supplies are compatible with
the ExtremeSwitching X690 and X870 series switches.

Note
The X690 and X870 models also can
accommodate one or two 1100 W DC PSUs. For information on replacing those units, see
Replacing a Summit 1100 W DC Power Supply. Bear in mind that you cannot combine power supplies of different wattages in the
same switch.
These switches have two bays for hot-swappable power
supplies. In a switch with a redundant power configuration, you can replace one
Summit AC power supply without powering down the switch.
You need the following tools and materials to replace a Summit 770
W AC power supply:
- Thermal protective gloves
- AC power cord, if you will not be re-using the cord from the
removed power supply
To replace a Summit 770 W AC power supply, follow these steps:
-
Disconnect the AC power cord from the wall outlet
and from the power supply.
-
Note the orientation of the installed power
supply, and the location of the latching tab at the right of the unit.
-
Push the latching tab toward the power supply
handle and pull outward on the handle to disengage the power supply internal
connectors.
-
Carefully slide the power supply the rest of the
way out of the switch.

Caution
Power supplies can become very hot
during operation. Wear thermal protective gloves when you remove a power
supply from an operating switch.

Note
If you are not installing a replacement
power supply, install a cover over the unoccupied power supply bay.
Unoccupied bays must always be covered to maintain proper system ventilation
and EMI levels.
-
Verify that the replacement power supply is
oriented the same way as the unit you removed, and has the same airflow
direction.
-
Carefully slide the power supply all the way into
the power supply bay.
-
Push the power supply in until the latch snaps
into place.

Caution
Do not slam the power supply into the
switch.
-
Connect the power cord to the power supply and to
a grounded AC power outlet.

Warning
Always be sure
that the source outlet is properly grounded before plugging the AC power
cord into the AC power supply.
-
If the power supply is equipped with a power cord
retainer, use the retainer to secure the power cord to the power supply.