How do I check to ensure the COM port is listed properly in Windows?

To ensure your serial device is installed properly, complete the following:

  1. Press Windows Key + R to open the Device Manager. Once Run comes up, type “devmgmt.msc” into the text field and press Enter.
  2. Expand the section labeled, Ports (COM & LPT).
  3. You should now see a COM number in brackets to the right of each port. If the device is installed properly, no exclamation points or question marks should be present next to the device.
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