GNU/Linux Mint 20 ASUS PCE-AC56 Wifi Driver Setup – Step-by-step Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install ASUS PCE-AC56 AC1300 Wireless 802.11ac Driver in Mint 20.x Ulyana/Ulyssa/Uma/Una LTS GNU/Linux Desktop.
And the Mint 20 ASUS PCE-AC56 Setup is based on the Broadcom BCM4352 Chipset Driver Installation.
So the linked guide explain How to Install BCM4352 Linux Driver.
Finally, in case to check your Adapter Chipset see: How to Check Wireless Device ID on GNU/Linux.
GNU/Linux Mint 20 ASUS PCE-AC56 Wireless Driver Installation Guide