ADLINK PCIe-PoE4 / PoE4+ Network Adapter

PCIe-PoE4 (and PoE4+) is a card designed for Power over Ethernet (PoE), typically for powering cameras or network devices over Ethernet.

The "Rev.A4" version appears to be a specific revision of this card (hardware variant)

Host interface : PCI Express ×4 (bus interface)
Gigabit Ethernet ports : 4 ports (in PoE4+ mode), each port separately
PoE standards compatibility : IEEE 802.3af (PoE – 15.4 W per port)
Cable requirements : CAT-5e or CAT-6, maximum length 100 m
Power Requirements : Maximum 2.4 A at 3.3 V (from PCIe), Maximum 5.6 A at 12 V (external power via 4-pin connector)
Jumbo frame : Support for up to 9 KB frames (jumbo frames)
Link aggregation / teaming : Support for port aggregation (teaming) for higher throughput / redundancy
Operating conditions : Operating temperatures 0 to 60 °C with airflow
Other features : Each port can power itself (PoE). Power management by detecting devices (classification) before supplying power