... 4 LAN Ports, 3.Ralink Chipset 4.Two External 5dbi antenna Feature: Compatible with UMTS/HSPA/EVDO USB modems, Wireless N ... MAC FilteringModulation TechnologyDBPSK, DQPSK, CCK, OFDM, 16-QAM, 64-QAM Quality of ServiceWMMSecurityNAT Firewall, SPI Firewall, MAC / IP / Packet / Application / ... Humidity 10%~90% non-condensingStorage Humidity 5%~90% non-condensing high quality Wireless N 300M 4p 3G router