Industrial guide rail installation standard, 35mm DIN rail installation, small space occupation, simple and quick installation. -and-surge protection: It adopts high-quality components and integrates professional protection circuits, which can work stably and reliably even in thunderstorm weather. Switch Type:Fast Switch Transmission Rate:1000Mbps Communication Mode:Full-Duplex & Half-Duplex Address:4K Forwarding mode:Store and forward Color: Black Material: Aluminum Alloy Package Contents: 1*Industry Ethernet Network Switch 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.