FAQ | Why isn't USB-C Source being detected in QIO-VEN4?
Answer
If USB-C Source isn't being detected with QIO-VEN4, it may be due to the connected computer’s firmware. Firmware, such as Thunderbolt™ Security, may be blocking USB-C devices.
- Restart your laptop.
- Press Esc or F10 repeatedly during boot to enter the BIOS/UEFI setup.
- Navigate to Advanced → Port Options → Thunderbolt Configuration.
- Look for Thunderbolt Security Level.
- Set it to No Security or Disabled.
This ensures USB‑C devices can connect without the computer's firmware blocking them.