There's unclear guidance on PoE voltage requirements, notably with my TP-Link WA901ND WiFi Access Point, labeled PoE-compatible but without specified voltage needs. It arrives with a 12V adapter and a PoE injector for network cable power supply.

What happens if linked to a PoE switch like D-Link DGS-1008P, where voltage specifics are absent and might surpass 40V? Could connecting the WA901ND to the DGS-1008P cause harm? How do I prevent damage, and can PoE adapt voltage automatically?