The PoE-CONV2 / AF product is a device that is used to separate the PoE (36-57V) from the LAN and change its voltage to 12VDC. The LAN transmission is forwarded to the end device, but PoE is not supplied to it. It can be used in cases where it is necessary to power an additional LAN device with 12V 13W power, without PoE.
It can be, for example, an IP camera without PoE function or a small LAN switch. It works with 100Base-T and 1000Base-T networks, providing 1GB/s transmission speed.
https://ewimar.com/power-converter-poe-to-12vdc-13w-poe-conv2-af.html