Driver Communication Port Com1 Apr 2026

Note: If COM1 says "(in use)," you may need to find the old device, change its port first, or ignore the warning. 4. Troubleshooting

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

If you have a USB-to-serial adapter (e.g., PL2303, FTDI) and need it to act as COM1: Plug in your device. Note: If COM1 says "(in use)," you may

Click at the top menu and select Show hidden devices . Note: If COM1 says "(in use)

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