: Ensure you are using a USB 2.0 port if possible, as some legacy adapters have compatibility issues with USB 3.0 ports.

Since the Jabra A320s is a legacy product, the official Jabra support site primarily offers modern tools like Jabra Direct , which may not contain the specific older driver package. Instead, use the following methods:

: Right-click the Bluetooth icon and select "Add a Device" or use the "My Bluetooth Places" menu.

: Unplug the Jabra A320s from your PC before starting the installation.

: Internally, the A320s uses the Broadcom BCM2045 chipset. You can often find compatible WIDCOMM Bluetooth Windows Software (version 6.x or similar) on archive sites or the Microsoft Update Catalog by searching for "Broadcom Bluetooth".

: If the device shows a yellow exclamation mark in Device Manager, try downloading the BTW (Bluetooth for Windows) driver v. 5.6.0.8800, which is known to support hardware IDs like USB\VID_0A5C&PID_2120 . Jabra A320s Bluetooth Stereo USB Adaptor - DriverHub