Linksys Wireless-N ADSL2+ Gateway 802.11n AnnexB non UR-2. Cabling technology: CAT 5 UTP. DSL connection type: ADSL, DSL specification: Annex B. Switching protocols: IPSec, PPTP, L2TP, Routing protocols: RIP1, RIP2, Data link protocols: Ethernet, Fast Ethernet. Certification: CE. Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -20 - 70 °C, Operating relative humidity range: 10 - 85 %