The 3 g HSPA + Mobile Router Huawei B683 is the ideal solution to provide connectivity to the Internet via 3 g cellular network using HSPA + (up to 21 Mbps down!). Has 4 LAN ports (10/100 Mbps), 1 USB port and sim card slots (compatible with all SIM and USIM CARDS of all mobile operators Italian and foreign), WiFi b/g/n (up to 300 Mbps). You can set different connection modes: Manual (handy for internet connections, switched on and off via a button or via web interface), automatic (always connected, comfortable for flat rate plans for unlimited time), On Demand (on request I mean the router connects when one of the connected devices so requests, without automatically disconnects connection request). Network mode: Auto, only 3 g, 2 g Only. The best solution to have the Internet connection where you don't get ADSL. In fact it ' just a sim card of any operator. for homes and small offices where there is no fixed line and there is 3 g signal, can also be used by car or by boat and with external antenna you can increase the signal level even in areas with poor UMTS field. It has an internal antenna and external antenna connector (SMA connector) which can be selected by the management software. It also has a built-in DHCP server and a WiFi Access Point (up to 32 users online simultaneously) which allows your Internet connection to any WiFi enabled device with integrated Firewall for safe surfing. Finally it has a USB port which you can connect a Hard drive or thumb Drive and share them on the net with all devices connected to the router. ALSO: •You can create a network printer for all users; •Has a great wi-fi coverage for the Interior thanks to the Protocol; •It's simple to set up and requires no special settings; •You can obtain the maximum connection speed to the internet, placing the router, where the better the reception;