Part No: J9478-69001 - HP Procurve 24-Port 10/100 PoE Zl Module

PoE (Power over Ethernet): The module supports PoE, which means it can deliver power to connected devices (such as IP phones, wireless access points, and cameras) over the same Ethernet cable that carries data. This eliminates the need for separate power cables for these devices.
ZL Module: It is a ZL (Zone-Licensed) module, which is designed to be installed in HP ProCurve or Aruba switches that have ZL module slots.