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Arduino does not recognize USB port on Mac - IDE 1.x - Arduino Forum
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Arduino does not recognize usb port on mac
How to fix usb device not recognized[solved] cheap arduino uno "unable to install driver/usb not recognize Arduino not working? troubleshoot tips and tricks to make it workThe usb driver does not close serial port on device unplug on windows.
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Arduino does not recognize USB port on Mac - IDE 1.x - Arduino Forum

Arduino Due Native USB Port Not showing up - Arduino Due - Arduino Forum

Arduino Nano USB Not Recognizing (Fix). : 8 Steps (with Pictures

Windows 10 - USB port does not show up - IDE 1.x - Arduino Forum

Arduino does not recognize USB port on Mac - IDE 1.x - Arduino Forum

Help needed: 1 of my 2 Arduinos fails to connect via USB - IDE 1.x

Windows 10 - USB port does not show up - IDE 1.x - Arduino Forum

Computer not seeing arduino when plugged in usb? - IDE 1.x - Arduino Forum