Typically, he’d occupy some desk space and lay out an unwieldy combination of a USB-RS485 dongle, a PoE power ... the PoE injector fits right in and, essentially, adds an extra RJ45 port to ...

Where that's not possible, there is the Raspberry Pi PoE+ Injector, which supports IEEE 802.3af (PoE ... some RJ45 connectors, and away you go. This is assuming your devices can accept power ...

Power over Ethernet (PoE) network switches are frequently used to supply outdoor IP cameras with electricity. Powering IP cameras becomes a challenge, however, when only non-PoE legacy switches are ...