1.Support the switch between 10/100/1000Base-T and 1000Base-SX/LX 2.1x1.25Gbps full-duplex fiber ports and 1x1000M Ethernet ports with auto-negotiation function 3.Support 1000M speed rate,MDI/MDIX and half/full-duplex with auto-negotiation function 4.Each port has the complete LED Indicator light 5.There are 3 mode available. They are single mode single fiber, single mode dual fiber and multi mode dual fiber. Support IEEE802.1d Spanning Tree Support high performance QoS function on each port,support broadcasting storm control Support 5-24V voltage input through network cables from ending equipment. 4/5+,7/8- are for power supply. 5-24V DC voltage output. Internal 4K MAC Address Entities Support 9216 bytes Jumbo packet Support IEEE 802.3x flow control and back pressure control Require no configuration and will instantly operate as soon as you power it up Low power consumption chip with heat sink built in to ensure longtime efficient operation. Color: As Shown Material: PCB Package Contents: 2 x Optical to Electrical Converters