Specification: Origin (Country or Region): Mainland China (Origin) Transmission rate: 10/100/1000Mbps Whether there is packaging: Yes Product size: 202.00x140.00x44.00mm/ 7.95x5.51x1.73inch 4ports: Interface specifications: 4 Gigabit POE interfaces + 1 Gigabit uplink RJ45 interface Transmission distance: 0-250 meters Network protocol: IEEE802.3AT/AF POE power supply: 72W Product size: 202*140*44MM Power supply (built-in): 48V Product material: metal 8ports: Interface specifications: 8 Gigabit POE interfaces + 2 Gigabit uplink RJ45 interfaces Transmission distance: 0-250 meters Network protocol: IEEE802.3AT/AF POE power supply: 120W Product size: 202*140*44MM Power supply (built-in): 48V Product material: metal Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x  POE Switch 1. Long-Distance Transmission: Gigabit poe switch transmit signals up to 250 meters, allowing for seamless communication between devices even at significant distances. 2. Wide Compatibility: Easily connect and control various internet-connected devices, thanks to ethernet switch's extensive compatibility with different devices and systems. 3. Reliable and Secure: The metal body design of small network switch provides excellent shielding against interference, ensuring a more reliable and secure connection for your devices. 4. Plug-and-Play with Standard POE Port of Gigabit POE Switch: Enjoy hassle-free installation and operation with its standard POE port, eliminating the need for additional power sources. 5. Comprehensive Protection of Gigabit POE Switch: from multiple protective features, including 4KV surge protection, POE overload protection, short-circuit protection, and electrostatic protection, ensuring a safe and secure power supply. And Experience stable and lossless signal transmission with the built-in high-power supply, ensuring consistent performance and reliable data transfer.