Features: brand new and high quality Support the switch between 10/100/1000Base-TX and 1000Base-SX/LX2x1.25Gbps full-duplex fiber ports and 2x10/100/1000M Ethernet ports with auto-negotiation function. Support 1000M speed rate, MDI/MDIX and half/full-duplex with auto-negotiation function Each port has the complete LED Indicator light Support single mode single fiber,single mode dual fiber ,multi-mode dual fiber and SFP slot Supported standards and protocols: IEEE 802.3 Ethernet media access control protocol; IEEE 802.3i 10BASE-T Ethernett Support high performance QoS function on each port 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 Optional system mode, built-in crash restart function (for 2 minutes without data, it will automatically restart)Data transmission rate Fast Ethernet full duplex/half duplex Specifications: Emission wavelength: 1310 and 1550 (nm) Ports: 2x1.25Gbps full-duplex fiber ports and 2x 10/100/1000M Ethernet ports with auto-negotiation function Performance Core Master: 88E6320-A0-NAZ2C000 Backplane Bandwidth / MAC- 5.6G / 16K Working Temperature: -2075 Storage Temperature: -4085 Working Humidity: 10%90% RH non-condensing Storage Humidity: 5%90% RH non-condensing Input Power 5V 1A / 5V 2A 10Base-T: 2 pairs of Category 3 (Cat3) or above UTP/STP (100m) Network media 100Base-TX: 2 pairs of Category 5 (Cat5) or above UTP/STP (100m) 1000Base-TX: 2 pairs of Category 6 (Cat6) or above UTP/STP (100m) Physical specifications Product size: 90mmx72mmx25mm/ 3.54x2.83x0.98in Weight 0.8kg Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-3mm error due to manual measurment. Package includes: 1 PC x Network Switch