HP 620 - Manual (Page 23)

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Installing and Connecting the ProCurve 620 Redundant and External Power Supply
Recommended Connection Topologies
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Recommended Connection Topologies
This section shows some recommended connection topologies using the
620 RPS/EPS. The 620 RPS/EPS can provide backup power support for up to
two ProCurve switches. In the illustration below, two ProCurve Switch 3500yl-
24G-PWR units are connected to the RPS ports on a 620 RPS/EPS. The two
ProCurve 2900 switches can be connected in the same way.
Figure 2-5. Connecting RPS to 2, 24 port switches
Limitations
The 620 RPS/EPS can supply power to only two connected and failed switches
at a time.
Status Indication
The Power Status LEDs on the 620 RPS/EPS indicate if a port can provide
power. For example, if two switches are connected to the 620 RPS/EPS and
the power to the switch on port 2 fails, the Power Status LED for port 2 turns
on. The Power Status LED for port 1 remains off.
620 RPS/EPS
ProCurve 3500yl-24G-PWR Switches
RPS
cables