The linksys smart wi fi modem router xac1900 is a simultaneous dual band 3x3 gigabit router with two 2 usb ports and supports a maximum of 600 mbps on the 24 ghz band and up to 1300 mbps on the 5 ghz band 3 external antennas for better coverage and range this is ideal for media centric applications such as streaming video gaming and voice over internet phone voip the linksys smart wi fi modem router xac1900 can create three 3 simultaneous yet separate wireless networks