GB PoE+ Ethernet-USB Adapter

The "GB PoE+ - Ethernet-USB" adapter is an enhanced version of the "GB-Ethernet-USB Adapter," incorporating Power over Ethernet (PoE+) technology. While the original adapter lacks PoE functionality, this updated version integrates PoE+ and includes a USB Type-C™ (USB 3.1), a 1 Gigabit Ethernet (RJ45) interface, and a DC/DC converter terminal with adjustable output voltage (6-18V) and a maximum output power of 25W. This board was designed to help users explore PoE technology while also investigating bit error rates and transmission speed via a Windows application. The design features optimized circuitry for both the USB 3.1 and Ethernet interfaces.

PoE provides electrical power over Ethernet cabling, typically supporting systems with up to 57 VDC and 73 W of power. It operates within a voltage range of 36-57 V, depending on the load and operating conditions. Various PoE standards offer different power classes: IEEE 802.3af (PoE) delivers 15 W (12.95 W at the terminal), IEEE 802.3at (PoE+) supplies 30 W (25.5 W at the terminal), and IEEE 802.3bt (4PPoE) provides 90 W (71.3 W at the terminal). Additionally, the IEEE 802.3bu standard (PoDL) is designed for single-pair Ethernet applications. This adapter serves as a learning tool for engineers and developers working with PoE systems.