It seems you are experiencing issues with your development boards not being recognized by the Surface Pro 11. Here are a few troubleshooting steps you can consider:
- Check USB Ports: Ensure that the USB ports on your Surface Pro 11 are functioning correctly. You can test them with other USB devices to confirm.
- Driver Installation: Since you mentioned that you have installed drivers for USB-TTL, ensure that these drivers are the latest and compatible with your Surface Pro 11. Sometimes, using the manufacturer's website for the most recent drivers can help.
- Device Manager: If the devices are not showing up in Device Manager, try refreshing the view or scanning for hardware changes. Sometimes devices may not appear until they are properly recognized.
- Power Supply: Ensure that your development boards are receiving adequate power. Some boards may require external power sources to function properly.
- Cable Quality: Verify that the data cable you are using is functioning correctly. A faulty cable can prevent proper communication between the Surface Pro and the development board.
- Compatibility Issues: Check if there are any known compatibility issues with the specific development boards you are using and the Surface Pro 11.
If you have tried all these steps and the issue persists, it may be worth reaching out to Microsoft support for further assistance, as there could be a hardware issue with the Surface Pro 11 itself.
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