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 Switch Material: Metal Supported Protocols: IEEE 802.3i IEEE 802.3u IEEE 802.3ab IEEE 802.3z SFP Ports: 2 RJ45 Ports: 4 Data Rate: 1000Mbps for SFP, 10/100/1000Mbps for RJ45. Package List: 1 x SFP Fiber Switch1 x Power Adapter1 x User Manual