Usage Tips:Truly Plug and Play: Simply plug in the switch, connect your devices, and you are good to go. Your router will instantly recognize the devices and you will be connected. Metal shel,Durable and sturdy:Good heat dissipation ensures long-term operation of the equipment,Two side heat dissipation holes Indicator light:Blue light flashing: communication is smooth,The light is not on: communication failure 8 Non-Blocking 10/100 Mbps Ports make it possible to Transfer large amounts of data without Interference:8 hundred Trillion PORTS Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. / Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. voltage-Plug Type: AC220V-EU Plug / AC110V-US Plug Colour:Black Material:Metal Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Package Contents: 1 * Gigabit Ethernet Switch 1 * Power adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.