Feature:1. Self Adaptive RJ45 Ports: This SFP fiber switch provides multiple SFP optical ports and 10/100/1000M self adaptive RJ45 network ports.2. Lossless Transmission: This Ethernet optical switch supports lossless and efficient transmission of multiple protocols. Full/half duplex self adaptive. Support self learning of media access address, support QoS.3. Plug and Play: This Ethernet switch is plug and play, support auto flip of MDI/MDI X ports, support jumbo frame size 9K bytes, operating temperature range from 0 to 60.4. LED Indicator: This Ethernet fast switch is designed with LED indicator to check the status of TX, FX LINK/ACT, POWER, FDX easily. Complies with IEEE 802.3i IEEE 802.3u IEEE 802.3ab IEEE 802.3z.5. 120km Extension: This SFP Ethernet switch can extend the fiber distance from 0 to 120km when used with different types of SFP module.Specification:Item Type: SFP Fiber SwitchMaterial: MetalSupported Protocols: IEEE 802.3i IEEE 802.3u IEEE 802.3ab IEEE 802.3zSFP Ports: 2RJ45 Ports: 4Data Rate: 1000Mbps for SFP, 10/100/1000Mbps for RJ45.Package List:1 x SFP Fiber Switch1 x Power Adapter1 x User Manual