Power-over-Ethernet Adapter. 802.3af/at PoE 30 Watt. Max. PoE power per port: 30 W. RJ-45 speed: 2.5 Gbit/s. The PoE12-30W is a multi-gigabit PoE injector that supports network speeds of up to 2.5 Gbps. It is permissible to connect powered devices (PDs) using existing cables with Cat 5e or higher. The PoE12-30W complies with PoE standards and has a PoE power budget of up to 30 watts. Additionally, it offers interoperability and compatibility with other standard-based PoE devices. Power over Ethernet (PoE). With Power over Ethernet, you can power compatible devices through the network cable. This significantly reduces cabling effort for end devices such as wireless access points, IP phones, and IP cameras, while providing high flexibility in device placement. 802.3at PoE. The IEEE 802.3at standard provides a maximum of 25.4 watts of power per PoE port with a voltage of up to 50 volts. The standard assumes that after line losses, 21.90 watts of usable power remains or may be drawn to avoid exceeding the maximum power output. For PoE, a Cat5e/6 cable with a maximum length of 100 m is recommended.