Issue 1: Device Shows as "Unknown Device" or "USB Serial Link"
The Actia PSA XS Evolution (often referred to as the Lexia 3 clone or genuine interface) bridges the gap between your laptop's USB port and the vehicle’s OBD2 port.
Go to > Advanced options > Startup Settings > Restart . actia psa interface driver
If the automatic installation fails or you see a yellow exclamation mark in Device Manager, perform a manual update:
Always plug the Actia interface into the exact same physical USB port on your laptop. Windows treats different ports as new hardware installations and may default to the wrong driver if you switch ports. If you need help finishing your diagnostic setup, tell me: Issue 1: Device Shows as "Unknown Device" or
After the installation completes, plug the Actia PSA interface into a USB port. Windows should automatically configure the device. Verify in Device Manager: Right-click Start > Device Manager .
"Development and Implementation of the ACTIA PSA Interface Driver: A Novel Approach to In-Vehicle Network Communication" Windows treats different ports as new hardware installations
To ensure you don't corrupt your Actia driver setup during a critical diagnostic session, adhere to these simple rules: