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Horizontal Surface Mounting: Attach the four self-adhesive pads (included in the accessory kit) to the bottom
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corners of the 640 RPS/EPS and place the unit on a secure horizontal surface.
5.
Power on the 640 RPS/EPS and verify that Self-Test completes normally. The 640 RPS/EPS does not contain a
power switch. It is powered on by connecting power through the AC power cord.
6.
Connect RPS/EPS power cables.
Connect the RPS/EPS power cable into any of the connectors for
the power supply slot that you are using. Then hand tighten the
retaining screw. Make sure that you do not overtighten the screw.
IMPORTANT: See the HP 640 RPS/EPS Installation and Getting Started Guide for supported RPS/EPS-to-
switch power topologies and configuration information. Each of the power supplies installed in the 640 RPS/
EPS can provide redundant power to any one of multiple HP 2920 switches, and can also provide additional
PoE power for multiple HP 2920 PoE+ switches. But, failure to connect the devices together in a supported
topology can cause unexpected results.
For PoE/PoE+ information, see the HP Power over Ethernet (PoE/PoE+) Planning and Implementation Guide.
Both documents are on the HP web site at: www.hp.com/networking/support.
7. Confirm each RPS/EPS power cable connection. Check the LEDs on the front of the 640 RPS/EPS and the switch.
On the 640 RPS/EPS, the Device Connected LED for the connector that you have used (for example 1A) will be on solid green.
On the switch, the XPS LED will be on solid green. If either of the LEDs does not appear this way, then refer to the
"Troubleshooting" chapter in the switch or HP 640 RPS/EPS Installation and Getting Started Guide.
After Self-Test:
Power LED = On
Fault LED = Off
Then, also connect and secure the RPS/EPS power
cable to the switch.
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