PoE I found on my desk and then decided to model it.
A PoE injector connects your PoE-enabled network device to a non-PoE LAN switch port. More specifically, a PoE injector can be used to connect a wireless access point, IP phone, network camera or any IEEE 802.3af/at-powered device (PD) to a network switch.
PBR Workflow. The model has 1 material which consists of 7 2K Textures
AO
BaseColor
Roughness
Metallness
Normal
Transmission
Emission