Driver Wch Pci Express Ps-t-ps------- L -x--

WCH (WinChipHead) is a major manufacturer of interface chips. If you see "WCH PCI Express-SERIAL" or "WCH PCI Express-PARALLEL" in your Device Manager with a yellow exclamation mark, it means Windows has identified the hardware but lacks the software to communicate with it. Common chip models used in these cards include: Supports dual UARTs (serial) and a parallel port. CH384: Supports quad or octal UARTs.

Always rely on the VEN_1A86 vendor ID and the DEV_XXXX device ID. Ignore cosmetic or malformed strings in Device Manager. Driver WCH PCI Express PS-T-PS------- L -X--

Without the driver, Windows doesn't know it's a "PCIe Serial Port Adapter"—it just sees the raw data the card is broadcasting. WCH (WinChipHead) is a major manufacturer of interface chips

Because Windows Update rarely finds this driver automatically, you must install it manually. There are two primary methods to do this. CH384: Supports quad or octal UARTs