The model 4504 is a Wireless-N router with four-port switch that allows sharing of a 3G, 4G, LTE, DSL or cable Internet service by Wi-Fi and Ethernet devices. Simply plug a 3G/4G USB modem, iPhone, Android phone, DSL modem or cable modem into the 4504 and computers, tablets, handhelds and other Wi-Fi or Ethernet devices can access the Internet. The 4504 provides an excellent range with coverage of up to 330 feet indoors and 990 feet outdoors, depending upon the environment.The 4504 provides wireless LAN speeds of up to 150 Mbps and includes a four-port 10/100 Ethernet switch, one 10/100 Ethernet WAN port for interface to a DSL or cable modem, and one USB 2.0 host port for interface to a 3G/4G modem or tethered smartphone. Wired and wireless routing with security can be added to a DSL modem or cable modem using the Ethernet WAN port. When connected to both a cellular and wired broadband connection, the 4504 provides automatic cellular backup to the wired broadband connection.The 4504 can also provide an improved cellular data connection where the signal strength is low. Place the 4504 and a cellular modem or tethered smartphone where the cellular signal is the best, typically near a window. Then the model 4504 will complete the connection to local Wi-Fi devices through extended-range Wireless-N. The 4504 can also be configured as a wireless LAN repeater to extend the range of your local network and includes WDS (Wireless Distribution System) support.