FT-991 setup for digital modes (with only a USB cable) – N1AV (x-N1RWY) on the air
FT-991A Setup for Digital Modes (for Windows 10 and a USB cable) - by VK3BT - Net Magellan
How-To setup your Yaesu FT-991A for the FT8 data mode and WSJT-X - YouTube
Usb Pc Linker Adapter Radio Connector For Yaesu Ft-450d Ft-950d Dx1200 Ft- 991 Ic-2710/2720/2820 Ft7800\8800\8900\100d U5 Link - Earphone Accessories - AliExpress