The ROLINE Gigabit Ethernet PoE Injector is a compact device designed to simultaneously supply power and data to four PoE-enabled network devices. It features four input ports for data and four output ports that deliver both data and power, supporting Gigabit Ethernet speeds of 10/100/1000 Mbps. This injector complies with the IEEE 802.3af and IEEE 802.3at PoE standards and provides up to 30 W of power per port for the reliable operation of devices such as network switches, IP cameras, access points, and IP phones. Power is supplied via a terminal block or an included external DC power supply that operates with 48 V to 56 V DC and has a capacity of 75 W. The device is constructed with a robust metal housing, measuring 94 mm in length, 62 mm in width, and 20 mm in height, and weighs 190 g. The package includes the PoE injector, the external DC power supply, and a quick start guide for easy setup to expand network infrastructure in office environments or industrial applications. Its durable design and compliance with industry standards make it suitable for continuous operation in demanding environments, providing a practical solution for powering multiple network components without the need for additional outlets.