HP 1820 Management And Configuration Manual page 73

Field Description
Extended PoE PD
This section describes the information about the remote PoE powered device.
Required If the remote device is a PoE device, this field details the remote ports PD power requirement in
Watts.
Source If the remote device is a PoE device, this field details the remote ports PoE PD power source.
Priority If the remote device is a PoE device, this field details the remote ports PD power priority.
Link Layer Discovery Protocol (LLDP and LLDP-MED)
LLDP-MED Remote Device Summary
7-15