This happens with low-quality clone interfaces that lack the necessary full-chip Optocouplers and the correct serial configuration.
Choose "Browse my computer for driver software" and point to the location of your exclusive driver files.
The original serial reference for the high-quality, full-chip interface is 9780.Z5 .
The software cannot find the USB Com Board interface. psa xs evolution 9780z5 driver exclusive
Features premium optocouplers (often Temic or Fairchild) and the correct Fujitsu AN2131QC microcontroller. It supports stable firmware updates and works seamlessly with Diagbox version 7.xx, 8.xx, and 9.xx.
If your Diagbox software displays a "Connection error" or requests you to connect an interface, apply these targeted fixes. The "Unknown Device" Error
| Pin(s) | Signal | Description | |--------|--------|-------------| | 1, 2 | VBAT | 24–60 V DC input | | 3, 4 | GND | Power ground | | 5–7 | U, V, W | Motor phases | | 10, 11 | CAN_H, CAN_L | CAN FD (ISO 11898-2) | | 14, 15 | ETH_A, ETH_B | 100BASE-T1 differential | | 18–20 | Hall A, B, C | 5 V logic, 10 mA | | 22, 23 | Encoder_CLK, Data | BiSS/EnDat | | 28 | STO_IN+ | Safe torque off (24 V logic) | | 30 | Brake_Out | 24 V / 1 A brake control | This happens with low-quality clone interfaces that lack
Even "Exclusive" components fail. Based on service reports from the field, here are the top three failure modes and fixes.
If you want to troubleshoot a specific setup error, tell me: What are you running? What software are you using? (Diagbox, PP2000, Lexia 3) What error message or code is showing in Device Manager? Share public link
If you’ve recently purchased a Lexia 3 or PP2000 kit, you’ve likely encountered the "Driver Not Found" error or a "Communication Error" within the software. This guide breaks down exactly how to secure the correct drivers and get your interface talking to your car. Why the 9780.Z5 Driver is "Exclusive" The software cannot find the USB Com Board interface
Upon reboot, press or F7 to select "Disable driver signature enforcement." Step 2: Extract the Driver Files
Turn off Memory Integrity in Windows Security. Go to Settings > Update & Security > Windows Security > Device Security > Core isolation details and flip the switch to Off. Restart your machine. 3. "Device Not Detected" Inside Diagbox