product features: Complies with IEEE 802.3, IEEE 802.3u and IEEE 802. standards.8K address learning Fives 10 or 100 or 1000Mbps self-adapting RJ45 ports.5-port Gigabit Switch Module.External Application Power Supply DC5V2A Mini Dimensional Design.LED indicates power, link and activity, provides simple working status prompts and troubleshooting Support EEPROM configuration.Support stacking, support .Supports IPv4 IGMP v1 or v2 or v3 and IPv6 ML Dv1 or v2 detection.Support address learning, automatically adjust the transmission mode and transmission rate All ports support IEEE 802.3x half-duplex flow control and full duplex back pressure mode.Non-blocking switching architecture, full wire-rate forwarding and maximum throughput filtering packets Specifications: Chip: RTL8367 standard: IEEE 802.3 10Base-T Ethernet IEEE 802.3u 100Base-TX Fast Ethernet IEEE 802. 1000Base-T Gigabit Ethernet ANSI or IEEE Standard 802.3 Automatically Adjusts IEEE 802.3x Traffic Control protocol: CSMA or CD Filtering and forwarding rates Ethernet 10Mbps (half duplex) 20Mbps (full duplex), 10Mbps: 14, 880pps Fast Ethernet 100Mbps (Half Duplex), 200Mbps (Full Duplex), 100Mbps: 148800pps Gigabit Ethernet 2000Mbps (full-duplex), 1000Mbps: 1488000pps Topological structure Stars Network media: 10Base-T: UTP of Class 3 or above (100m) 100Base-TX: Category 5 UTP (100m) 1000Base-T: Category 6 or Category 5 UTP (100m) Number of ports: 5 10 or 100 or 1000M pin port cascade: All ports can be used as UP-LINK ports Forwarding mode: Store and forward temperature: Working temperature: 0 -40 (32 -104 ) Storage temperature: -40 -70 (-40 -158 ) humidity: Operating Humidity: 10percent -90percent non-condensing Storage humidity: 5percent -95percent non-condensingBackplane bandwidth: 16G LED indication: 1 power light (power light: red light) 4 data lights (Link or Act: green light) Application power External power supply DC 12V-48V Material: PCandMetal colour: Green Package Contents: 1 x 3-port Gigabit switch module 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.