• Mi Router 4A supports Smart Connect, offering 2.4GHz and 5GHz bands under a single Wi Fi name. No more confusion about which Wi Fi network to connect 2.4GHz offers better performance through walls, while 5GHz offers faster speeds. The optimal frequency band is automatically selected. 4 external omnidirectional antennas, tested with precision, and with a carefully designed internal structure and configuration. It greatly improves transmission performance, even in complex environments and even through the walls of your home.