Simply pop in a 4G LTE SIM card to the 4G-AC55U LTE router, and the built-in modem connects wirelessly to the internet via super-fast mobile broadband. You can enjoy up to 150Mbps downloads and 50Mbps uploads, with no worries about USB dongle compatibility. It can even connect to a cable modem if you just want to use a 4G LTE connection as a backup internet connection! With its 4X wider Wi-Fi coverage and concurrent 1167Mbps Wi-Fi speed, you can share the internet connection all around your home or office - perfect for locations where 4G LTE speeds are faster than conventional ADSL or cable broadband. Convenient and cable-free, 4G-AC55U will give you smoothly-streaming HD videos and fast file-sharing. 4G mobile broadband technology means you will enjoy 5X faster downloads and uploads than 3G HSPA+1. The latest 802.11ac 2-transmit, 2-receive (2X2) antenna design, provides up to 6X faster wireless speeds for brilliantly-fast HD video streaming, file transfers and more! You will enjoy lightening-fast 4G network speeds with 4G-AC55U's external dual-band antenna and fine-tuned radio frequency design. This widens the Wi-Fi coverage by up to four times compared to other 4G LTE routers, giving phenomenal performance throughout your home. 4G-AC55U makes it easy to find the best position for your router - simply use the signal strength indicator button to find the location with the strongest 4G LTE signal! External mobile broadband antennas perform better than internal antennas. Indoors, the best 4G LTE reception is usually found near a window, but if this isn't practical you can easily add an antenna extension cable thanks to the detachable antennas with their standard SMA jack connectors.