: Plug in your Quad RS232-HS adapter. Windows should now recognize four distinct COM ports in the Device Manager .
This guide provides the official methods for downloading the Quad RS232-HS driver and troubleshooting common installation issues. 1. Where to Download the Official Driver
How to Download and Install the Quad RS232-HS Driver The device is a specialized serial communication adapter commonly found in professional workstations, rugged laptops, and industrial setups . It allows a single USB connection to provide four high-speed serial ports. Because these devices rely on specific hardware chips—most notably those from FTDI (Future Technology Devices International)—having the correct driver is essential for your computer to recognize and communicate with them.
The Quad RS232-HS device typically uses the chipsets. To ensure stability and security, it is best to download drivers directly from the manufacturer or trusted hardware providers.
: Obtain the .exe setup file (often named something like CDM v2.12.36.4 WHQL Certified ) from the FTDI website.
: Open Device Manager (Win + X > Device Manager) and expand Ports (COM & LPT) . You should see four entries for "USB Serial Port". Drivers - FTDI