HP 1920-24G-PoE+ (370W), 1920-8G Connecting the DC power cord, Power supply selection criteria

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4.Connect one end of the AC power cord to the AC power receptacle on the switch.

5.Connect the other end of the AC power cord to the AC power outlet.

6.Examine the power LED. If it is ON, the power connection is correct.

Figure 15 Connecting the AC power cord to the AC power receptacle

Connecting the DC power cord

IMPORTANT:

Make sure the DC power cord is shorter than 3 m (9.84 ft).

Only the HP 1920-24G-PoE+ (370W) supports DC RPS power.

If only the DC power cord is connected, the switch operates correctly when the DC input voltage is in the range of –47 VDC to –57 VDC. If both AC and DC power cords are connected, the switch chooses the power supply based on the DC input voltage, as shown in Table 4.

Table 4 Power supply selection criteria

DC input voltage

Power supply

–54 VDC to –57 VDC

DC

 

 

< –54 VDC

AC

 

 

To connect the DC power cord:

1.Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

2.Connect one end of the grounding cable to the grounding screw on the rear panel, and connect the other end to the ground.

3.Insert the DC connector to the DC power receptacle.

If you cannot insert the connector into the receptacle, do not force it. Re-orient the connector and try to insert it again.

4.Use a flathead screwdriver to fasten screws on both sides of the connector.

5.Connect the other end of the DC power cord to the RPS. Make sure the RPS is supplying a minimum of 876 W power.

6.View the RPS LED to verify that the DC power cord is installed correctly.

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Contents HP 1920 Gigabit Ethernet Switch Series Page Contents Page Preparing for installation Safety recommendationsHP 1920 Gigabit Ethernet Switch Series models Dust concentration limit in the equipment room Examining the installation siteTemperature/humidity CleannessEMI Attaching Type-A mounting brackets to the switch Installing the switchAttaching Type-C mounting brackets to the switch Attaching Type-B mounting brackets to the rack post Mounting the switch on a wall Mounting the switch on a workbenchHole spacing Connecting cables Connecting network cableInstalling the SFP transceiver module and optical fibers Connecting the AC power cord Connecting the console cableConnecting the DC power cord Power supply selection criteriaDC input voltage Power supply Connecting the DC power cord to the DC power receptacle Verifying the installationConsole cable Accessing the switch for the first timeSetting up the configuration environment Connecting the console cableConnection procedure Setting terminal parametersSelect File Properties in the HyperTerminal window Setting the serial port parametersHyperTerminal window Powering on the switch Verification before power-onPowering on the switch Press Enter and the system displays the following prompt Support and other resources Contacting HPRelated information Conventions Convention DescriptionConvention Description Network topology icons 1920-16G Appendix a Chassis views and technical specificationsChassis views 1920-8G1920-48G 1920-24G1920-8G-PoE+ 180W 1920-8G-PoE+ 65W1920-24G-PoE+ 370W 1920-24G-PoE+ 180WPorts and interface card slots Physical specificationsChassis dimensions and weights Chassis Dimensions H x W x D Maximum weightPower specifications Environmental specificationsChassis Fixed fans Cooling systemFiber port LEDs Power LEDAppendix B LEDs Copper port LEDsOnly the HP 1920-24G-PoE+ 370W supports the RPS RPS power LED descriptionAppendix C Troubleshooting Troubleshooting methodsSymptom Troubleshooting method