To get your card running immediately, use the official drivers from the chip manufacturer:
If your card is showing up as a "PCI Serial Port" with a yellow exclamation mark in , follow these steps:
The driver for Windows 10 is the software required for the WCH CH382 chipset, which enables dual serial (RS232/COM) and parallel (LPT) ports on a PCIe add-in card. Most modern PCs lack these legacy ports, making this specific chipset popular for connecting older hardware like CNC machines, POS systems, and industrial scanners to modern Windows 10 machines. Quick Download Links
If you have a pre-built Dell tower, use the Dell PCIe Serial Card Driver .
CH38XDRV.EXE (Nanjing Qinheng Microelectronics) — Supports 32/64-bit Windows 10 and 11.
