The "K20A" designation is the regulatory model for several docks in the WD19 family. Depending on your specific model, you can download the latest firmware from the . Dell Dock WD19/WD22TB4 Firmware Update Utility
The (officially known as the Dell WD19 series) is a versatile docking station designed to enhance connectivity for Latitude, Precision, and XPS laptops. Keeping its firmware updated is critical for resolving connectivity issues, improving display stability, and ensuring compatibility with the latest operating systems. Official Firmware Download Links dell dock k20a firmware download