Driver Communication Port Com1 [2024-2026]

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

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

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 . Driver Communication Port Com1

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

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: If you have a USB-to-serial adapter (e

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) . Right-click it and choose > Port Settings > Advanced

The "Driver Communication Port Com1" refers to the legacy serial interface (COM1) that Windows uses to communicate with hardware like modems, industrial equipment, or USB-to-serial adapters. In modern Windows 10/11, these are often virtualized . 1. Locate/Identify COM1 in Device Manager If you are trying to find where to configure COM1: Press and select Device Manager . Expand the Ports (COM & LPT) section. Look for Communications Port (COM1) . If COM1 is missing or invisible: