Driver Communication Port Com1 -

Click at the top menu and select Show hidden devices .

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

This will allow me to provide the specific driver link or configuration you need. What is the Communications Port (COM1) in Windows 7? Click at the top menu and select Show hidden devices

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

What is the shown in Device Manager (e.g., yellow exclamation mark)?

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