1,4 RJ45 port, 1 RJ11 port 2,Full-rate ADSL 2/2+ modem 3,Modem + router. 4,downstream up to 24 Mb ... to 1Mb ZBT-DR340 ADSL Modem integrates full-rate ADSL 2/2+ modem, router, firewall, 4 port 10/100Mbps Ethernet ... is supported for flexibility in operating with a range of devices.1. ADSL/ADSL2/ADSL 2+,downstream up to 8Mb/upstream ... °C~40°CStorge Temperature-20°C~70°C ADSL2/2+ modem with router function