Zyxel P-661HW-D3 802.11g Wireless ADSL2+ 4-port Security Gateway over ISDN, ADSL Zyxel P-661HW-D3 802.11g Wireless ADSL2+ 4-port Security Gateway over ISDN. DSL specification: G.992.1 Annex B. Supported network protocols: IEEE 802.1d Transparent Bridging, 802.1q Pass-through Bridge, IP Routing: TCP, UDP, ICMP, ARP,.... Weight: 360 g. Dimensions (WxDxH): 178 x 125 x 36 mm, Networking features: Ethernet LAN, ADSL, Maximum data transfer rate: 0.1 Gbit/s