Zyxel P-660H-D3 ADSL 2+ 4-port Gateway over ISDN, 1 Mbit/s, 24 Mbit/s, G.dmt ADSL over ISDN (G.992.1 Annex B), IEEE 802.1d Transparent Bridging, 802.1q Pass-through Bridge, IP Routing: TCP, UDP, ICMP, ARP,..., Status, 0 - 50 °C Zyxel P-660H-D3 ADSL 2+ 4-port Gateway over ISDN. Upstream data rate: 1 Mbit/s, Downstream data rate: 24 Mbit/s, DSL specification: G.dmt ADSL over ISDN (G.992.1 Annex B). Supported network protocols: IEEE 802.1d Transparent Bridging, 802.1q Pass-through Bridge, IP Routing: TCP, UDP, ICMP, ARP,.... LED indicators: Status. Weight: 11.5 oz (325 g). Management platform: Web-based, Maximum data transfer rate: 0.1 Gbit/s, Dimensions (WxDxH): 7.09 x 5.04 x 1.42" (180 x 128 x 36 mm)