Driver Communication Port Com1 Here

If COM1 is completely missing, it might be disabled in your computer’s BIOS/UEFI under "Onboard Peripherals" .

If you need to add a serial port manually, go to Device Manager, click Action > Add legacy hardware > Install the hardware that I manually select > Ports (COM & LPT) . Driver Communication Port Com1

In Device Manager, find your device under (e.g., USB Serial Port (COM3)) . If COM1 is completely missing, it might be

If this fails, download chipset drivers from your motherboard or laptop manufacturer’s support site . 3. Change a Device to use COM1 If COM1 is completely missing

Are you trying to connect an or a USB-to-serial adapter ?

Right-click it and choose > Port Settings > Advanced . Change the COM Port Number to COM1 .