If automatic installation fails, you can force Windows to use the correct driver:
If the driver does not install automatically, you can force it:
I can provide targeted steps or configuration scripts to get your hardware communicating properly. Share public link
Historically, matching a machine environment to the tool's software architecture required rigid specifications. However, structural iterations have split how these system tasks are performed: Legacy Architecture (Windows XP & Windows 7 32-bit)
This architecture is a major source of confusion for new users. Many seek out a separate driver file—often searching for terms like “Actia PSA XS Evolution 9780.z5 Driver download”—when in fact the driver is bundled within the Diagbox installer. Understanding this relationship is the first step toward a successful setup.
The multiplexer is the definitive dealer-level Vehicle Communication Interface (VCI) used to diagnose, program, and configure Peugeot, Citroën, DS, and Vauxhall/Opel vehicles. Operating this specialized hardware requires the correct Actia PSA XS Evolution 9780.Z5 driver to bridge the VCI to your PC diagnostic software environment, which typically consists of Diagbox, Lexia 3, or PP2000 .
Replace the short USB lead connecting the round 9-pin connector to your laptop. Ensure you are plugged into a USB 2.0 port. Diagbox Asks to Connect VCI (Interface Not Found)
If nothing happens when you plug in the USB cable—no LED, no sound, no Device Manager entry—the problem may be hardware‑related.