D-Link DIR-451 3G/3.5G Mobile Router offers subscribers of wireless carriers the ability to share Mobile Broadband access at speeds up to 3.6Mbit/s. With 802.11g connected stations from anywhere, a compatible 3G/3.5G/WiMAX mobile signal is available.   Key Features: 1.Provides Wireless Internet Access Anywhere at Anytime within a wireless broadband network. 2.Enables multiple users at a location to share one wireless broadband connection to the Internet, email, corporate networks. 3.Connection over WLAN and Ethernet     4.Support 4 ports 10/100Mbps Ethernet 5.Advanced Firewall features. 6.CardBus Interface(3G/UMTS ,3.5G/ HSDPA) ;USB Interface(3G/UMTS ,3.5G/ HSDPA) 7.dimension:220x149x35 mm     Support 3G/UMTS:Option Global Trotter 3G Quad                              ZTE MF320                              Novatel Merlin U530                              Huawei E612                             Huawei E600 Support 3.5G/HSDPA:Huawei E220 (USB)                                   Huawei E620                                   Option Global Trotter MAX                                   Option Global Trotter MAX 7.2                                   Option Global Trotter Fusion+HSDPA                                   Sierra AirCard 850/860/875                                   Novatel Merlin U730/U740