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That does sound like a hardware issue.
The general rule for hardware problems is;
1. Check power supplies
2. Check clocks
So, go look at the DE-115 schematic and start checking the power supplies.
Actually, in your case, first check the DE-115 with a different PC, just in case the one you are using has a bad USB connector.
Cheers,
Dave
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I have tried on other's PC, the same "Unknown Device" issue prevails. I am now looking at the schematics right now. At the same time, I have also contacted terrasic support, I hope I can get a technician to fix it if it comes to the worst scenario.
Thank you for your time.
Honored Contributor
