Pi40952 3x2b Driver Here

If your card is a Delock 89220 or similar, search for your specific model number on the Delock Support Page.

Typically provides 2 x Serial RS-232 DB9 ports or a combination of serial and parallel ports. pi40952 3x2b driver

Often uses the Oxford OXPCIe952 or WCH CH382 controllers. If your card is a Delock 89220 or

To ensure system stability, always prioritize official manufacturer sources over third-party driver "update" sites. go to Device Manager

Power down your PC and install the card into an available PCIe slot.

If you have a .zip file, go to Device Manager , right-click the "Unknown Device" (often listed under Multi-port serial adapters), select Update Driver , and point it to the extracted folder.