FRITZ! Box Fon WLAN 7140 Annex B + WLAN USB Stick, Ethernet, Fast Ethernet, IEEE 802.11b, IEEE 802.11g, IEEE 802.11g++, SIP, FRITZ!DSL, -Microsoft Windows XP, 2000, Me, 98 -Linux SuSE 9.0 -Mac OS X 10.3.3 +, 7.28 x 5.51 x 1.38" (185 x 140 x 35 mm), - VoIP - ADSL, T-DSL - ITU G.992.1 (G.DMT) Annex B FRITZ! Box Fon WLAN 7140 Annex B + WLAN USB Stick. Data link protocols: Ethernet, Fast Ethernet, IEEE 802.11b, IEEE 802.11g, IEEE 802.11g++, VoIP protocols: SIP. Bundled software: FRITZ!DSL. Compatible operating systems: -Microsoft Windows XP, 2000, Me, 98 -Linux SuSE 9.0 -Mac OS X 10.3.3 +, Dimensions (WxDxH): 7.28 x 5.51 x 1.38" (185 x 140 x 35 mm), Supported protocols: - VoIP - ADSL, T-DSL - ITU G.992.1 (G.DMT) Annex B