HG90A is a standard Gigabit Ethernet PoE adapter, which provides 1*1000Mbps PoE port and 1*1000Mbps uplink port, supports 1/2+, 3/6-, 4/5+, 7/8-, 52V POE power supply, and is suitable for devices that support 1/2+, 3/6-, 4/5+, 7/8-, power supply at the receiving end. The product is mainly used for POE network power supply, suitable for security monitoring, wireless coverage, bridge relay and other application scenarios.