5-port network switch (RJ45)
Unmanaged 5-port 10/100 Ethernet switch · DC 12 V (9–15 V) 0.5 A · 5.5 × 2.1 mm jack

Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Pins
- DC jack centre (+)
- DC jack sleeve (−)
- Port 1
- Port 2 (PoE when enabled)
- Port 3 (PoE when enabled)
- Port 4 (PoE when enabled)
- Port 5 (PoE when enabled)