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USB-TO-GPIO: USB-TO-GPIO

Part Number: USB-TO-GPIO

The adapter broke down after working normally for several days.I am having trouble connecting USB-TO-GPIO to PC. The green light on the adapter is off, however, the GUI says adapter not attached. Also, the device manager displays an 'unknown device'.With in a few computers, are all the same problem.Could anyone provide a solution for this issue?Heartfelt thanks!