Download the multi-port serial/parallel PCIe driver package (typically named CH38XDRV.EXE or a zipped equivalent). Option 2: Windows Update Catalog If you prefer a signed driver verified by Microsoft: Open the website ( ://microsoft.com ). Search for "WCH CH382" or "PCI Express to Serial Port".
If you experience dropped packets or garbled text when using connected serial devices: wch ch382l driver windows 10