ADSL port : DSL 4port 10/100M auto-crossover(MDI/MDI-X) switch : ETHERNET factory default rest button wireless on/off switch power jack power switch NETWORK PROTOKOLS and FEATURES : NAT, static routing and RIP-1/2 NAT supports PAT and multimedia applications Multi-to-multi NAT Transparent bridging Dynamic Domain Name System DNS relay OPERATING ENVIRONMENT : Operating temperature : درجه سانتی گراد 0/40 Storage temperature : درجه سانتی گراد 20/70- 20-90%non condensing : Humidity