Features/special features: External adsl modem, 4 10m/100m self-negotiation ethernet ports , convenient for 4 computers connection: Max downstream speed at 8mbps and max upstream speed at 1mbps Compatible with various terminal devices Low wastage, suitable for various conditions and environment friendly. User-oriented design for software/ hardware - ansi t1.413 - itu g.992.1 (g.Dmt) - itu g.992.2 (g.Lite) - optional voice filter - software upgradeable - supports 8 virtual circuit Operation system: windows 98 and above; computer of p586 or above, 16m (or bigger) memory; a lan card (10m or 10/100m self negotiation nic) multi-functional telephone line; 200m or more extra space in the hard-disk Operating temperature: 0íµí½40íµ Storage temperature: ú¡40íµí½85íµ Humidity: 10%í½90% Oem/odm packaging or generic retail packaging