unable to open comm port
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unable to open comm port
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unable to open com port win error code 433
unable to open comm port, unable to open com port, unable to open com port error 2, unable to open com port win error code 2, unable to open com port windows 11, unable to open com port 1, unable to open com port error 5, unable to open com port windows 10, unable to open com port win error code 5, unable to open com port win error code 433