There are a numbers of ways over delivering power over Cat5 Ethernet cabling, however Power over Ethernet is usually implemented following the specifications in IEEE 802.3af standard. This PoE adds DC power to the data pairs using signal transformers, then picks off power at the far end the same way. The standard specifies a maximum power usage for the PoE powered device of 12.95 W and there's a selection of external PoE power adapters/splitters available that can be used to pick off the power.
The only Opengear RIM device that can be directly powered by connecting to a PoE Ethernet port is the ACM5004-2-P (4.2W).
The other lower power Opengear RIIM devices (i.e. ACM5500, ACM5000 and SD4000) all can be operated using an external Power over Ethernet (PoE) splitter.
- The SD4001 and SD4002 pull 0.3A minimum at 12V. However in all cases the total wattage for these devices is 7.5W max
- The ACM5000 family can draw up to 0.5A at 12V, so again use a 12V PoE power adapter/splitter rated at 10W
- Similarly the ACM5500 can draw up to 10W (6.3W for ACM5508-2-M, 6.4W for ACM5508-2-I, 9.4 W for ACM5504-5-G-I)
Opengear engineers have tested a number of PoE devices including the Cisco POES5 5-Volt Power over Ethernet Splitter