Linksys Wireless-G ADSL Home Gateway 4-port. Networking standards: g.992.1 (g.dmt), g.992.2 (g.lite), IEEE 802.11b, IEEE 802.11g, IEEE 802.3u. Firewall security: SPI firewall, VPN support: IPSec, PPTP, L2TP. Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -20 - 70 °C, Operating relative humidity range: 10 - 85 %. Weight: 0.27 kg. Power requirements: 12VDC 1A, Maximum data transfer rate: 0.01 Gbit/s, Dimensions (WxDxH): 140 x 140 x 27 mm