The PoE/ETH/USB HUB HAT is a PoE (Power over Ethernet) USB HUB HAT for Raspberry Pi Zero. It enables network connectivity and power delivery to the Raspberry Pi over a single Ethernet cable when used with a proper IEEE 802.3af compliant power supply, and it provides three extended USB ports. Key benefits Singlecable power and data: powers and connects the Raspberry Pi Zero via one Ethernet cable, reducing wiring in compact setups. Compact HAT form factor for Raspberry Pi Zero: designed for tight spaces and easy integration. Reliable connections: dedicated pogo pin connection with cutouts tailored for the Zero series, enabling plugandplay installation. USB expansion: adds 3x USB 2.0 ports (USB1 to USB3) compatible with USB 2.0 and USB 1.1 devices. Flexible networking: extended Ethernet port uses RTL8152B chip to provide USB to Ethernet, supporting 10 Mbps or 100 Mbps with autonegotiation. Standard compliant PoE: IEEE 802.3af compliant PoE input. Power and output specs: PoE power input ranges from 37 V to 57 V DC, with a power output of 5 V 2.5 A DC out. Compatibility and connections Compatible with Raspberry Pi Zero series. Specialized pogo pin connection with dedicated cutouts for Zero series for easy installation. Plugandplay operation with no complex setup required. Technical specifications USB 2.0 ports: 3 ports (USB1 to USB3), compatible with USB 2.0 and USB 1.1 devices. Ethernet: RTL8152B chip, extended Ethernet port, 10 Mbps or 100 Mbps autonegotiation. Network standard: IEEE 802.3afcompliant PoE. PoE input: 37 V to 57 V DC. Output: 5 V DC at 2.5 A. Use scenarios Remote headless Raspberry Pi Zero deployments in tight spaces, where a single Cat5e/Cat6 cable provides both power and network. Small IoT gateways or home automation hubs based on Raspberry Pi Zero, reducing cables and simplifying installations. Portable development or fieldtesting setups where a single PoEenabled supply can power the Pi and USB peripherals while providing network access.