GNU/Linux Elementary OS ASUS USB-AC55 B1 Wifi Driver Setup – Step-by-step Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install ASUS USB-AC55 B1 AC1300 Wireless 802.11ac Driver in Elementary OS GNU/Linux Desktop.
And the Elementary OS Linux ASUS USB-AC55 B1 Setup is based on the Realtek rtl8812BU Chipset Driver Installation.
So the linked guide explain How to Download and Install the rtl8812BU Linux Driver.
Finally, in case to check your Adapter Chipset see: How to Check Wireless Device ID on GNU/Linux.
GNU/Linux Elementary OS ASUS USB-AC55 B1 Wireless Driver Installation Guide
On the Driver Download page, take into account that the Morrownr release is currently the recommended choice for this Dongle.