The router features three external antennas and one internal antenna, powered by a 2.6 GHz quad-core CPU with 256MB of flash memory and 1GB of RAM. It supports bandwidths of 20/40/80/160MHz and integrates ASUS's proprietary AiMesh mesh networking function.  4G / 5G Mobile Tethering; Stay connected anytime with convenient USB 4G LTE and 5G mobile tethering, even during internet outages or on the go. You plugin your smartphone to USB and make a connection. 

The physical dimensions of the RT-BE86U are 235mm in width, 90mm in depth, and 316mm in height, with a weight of 854g. Additionally, the router includes USB ports for file servers and 5G/4G LTE tethering, featuring one USB 3.2 Gen 1 Type-A and one USB 2.0 Type-A port.

For more information, visit the official ASUS product page.