There are Wi-Fi routers with single antennas, dual external antenna, triple external antenna, and even six external antennas. The higher the number of antennas, the higher is the wireless speed. A router with a single antenna may be convenient for home use. However, if the router is for your office, multiplayer gaming, or multi-device 4K streaming, you may want to go for a router with four, five, or six antennas.
Routers with frequency, wireless speed, broadband compatibility, antenna, and numbers of USB ports.
Brands : Tp Link, DLink, Netgear, etc.