Features: 1.IEEE Standard: This 100M switch module meets IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab standard. 2.Self Adaption: This network switch module has 4 10/100M self adaptive network interface, supports Auto MDI/MDIX. 3.Auto Negotiation: Each port of this Ethernet switch module supports auto negotiation function, automatically adjusts the transmission mode and rate. 4.Self Learning: This switch core module supports Media Access Control address self learning, clog free communication in full speed. 5.LED Indicator: This switch module board is designed with dynamic LED indicator, provide simple working status prompt and troubleshooting. specification:Item Type: 100M Switch Module Material: Printed Circuit Board Technical Standards: IEEE802.3, IEEE802.3u, IEEE802.3x Interface: 100M Network Port: 10Base T/100Base TX Self Adaptation Transmission Distance: Twisted Pair: 100 Meters / 109yd (Standard CAT5/CAT5e Cable) Interface Indicator: 1 to 4 (LINK/ACT) Power Indicator: PWR System Switching Broadband: 1.0G Cache Size: 1.0G Media Access Control Address: 1K Operating Temperature: Minus 5 to +55 Storage Temperature: Minus 40 to +85 Humidity: 10% to 95% (No Condensation) PackageList:1 x 100M Switch Module