marinesitu
The Power-over-Ethernet (PoE) cameras from Luxonis, such as the OAK-D-PoE, OAK-1-PoE, OAK-D S2 PoE, OAK-D W PoE, OAK-D Pro PoE, and OAK-D Pro W PoE, are designed to be powered using the 802.3af standard. This standard allows for a power delivery of 12.95W per port, which is more than sufficient for these cameras as they require less than 6.25W.
802.3af standard voltage ranges from ~45-55V. 12V is therefore not enough.
https://docs.luxonis.com/projects/hardware/en/latest/pages/guides/powering_poe_devices#powering-poe-devices
Thanks,
Jaka