US Robotics ADSL2+ 4-Port Router. Cabling technology: 10/100 Ethernet. DSL connection type: ADSL, DSL specification: ITU-T G.992.3/ADSL2+ (ITU-T G.992.5), G.DMT (ITU-T G.992.1), G.lite (ITU-T G.992.2), ITU-T G.994.1. Supported network protocols: RFC 2516, RFC 2364, RFC 2684. Security algorithms supported: SPI, Filtering: IP, VPN support: IPSec, PPTP, L2TP. Safety: UL, CUL, Certification: CE Class B