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HP ProCurve 2910al Switch Series - Connect the Switch to a Power Source
Connecting the switch to a power source
Connecting an external power supply (Optional)
The ProCurve 620 Redundant and External Power Supply (J8696A), referred to as the 620 RPS/EPS, is an accessory product for the 2910al switches and specific other ProCurve switches. The 620 RPS/EPS provides two types of power to the switches, however the 2910 switches do not use the PoE power (EPS) portion of the 620 RPS/EPS.
These switches support the RPS or redundant portion of the 620 RPS/EPS. Redundant power to one of up to two switches can be supplied to back up the internal switch power supply in case of the internal power supply fails. Should the internal switch power supply fail, power will be supplied from the 620 RPS/ EPS.
The 620 RPS/EPS is an unmanaged power supply that only provides information by way of LEDs.
The RPS portion of the 620 RPS/EPS monitors the power signal from the switch by detecting that the 620 RPS/EPS is connected to a switch with an RPS cable. When the power from the switch is no longer detected, the 620 RPS/EPS will provide power to the switch within 1 millisecond.
The 620 RPS/EPS supports hot plugging of the RPS cable without causing a reboot of the switch or causing the power supply in either the 620 RPS/EPS or switch to shut down temporarily or permanently.
Operating characteristics of the 620 RPS/EPS (J8696A)
The 620 RPS/EPS has two RPS ports, each of which can provide redundant +12V power to a connected switch. If a switch with no AC power is connected to an operating 620 RPS/EPS, it will receive power.
The 620 RPS/EPS also has two EPS Ports which can not be used with the 2910al switches.
For redundant AC power, connect the 620 RPS/EPS to the switch using one of the supplied RPS cables. RPS cables are 2 meters (6.56 feet) in length.
620 RPS/EPS LEDs
The 620 RPS/EPS LEDs are located on the front and back of the device. There are two dual colored (green/orange) LEDs for each RPS and EPS port:
Figure 1: Back of 620 RPS/EPS
1 - RPS port LEDs
2 - EPS port LEDs
3 - EPS ports, not used
4 - RPS ports
620 RPS/EPS connectivity
The 620 RPS/EPS can provide backup power support for up to two ProCurve switches. In fig 2 shown below, two ProCurve Switch 2910s are connected to the RPS ports on a 620 RPS/EPS.
Figure 2: Connecting RPS to 2 switches