Driver Communication Port Com1 -

Click at the top menu and select Show hidden devices .

If you have a USB-to-serial adapter (e.g., PL2303, FTDI) and need it to act as COM1: Plug in your device. Driver Communication Port Com1

If still missing, your motherboard may not have a native serial port (common in modern laptops), requiring a USB-to-Serial adapter. 2. Install or Update the COM1 Driver If the port has a yellow exclamation mark or isn't working: Right-click in Device Manager . Select Update driver > Search automatically for drivers . Click at the top menu and select Show hidden devices

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

If a "PCI Serial Port" driver is missing in Device Manager, you need the Chipset or Serial Port driver from your motherboard manufacturer . To narrow this down, please tell me:

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