In Device Manager, check the properties of the card under the "Resources" tab. Ensure the "Use automatic settings" box is checked. If it allows manual configuration, change the basic configuration profile until an IRQ channel (such as IRQ 5 or IRQ 7) is successfully allocated without conflicts. Conclusion
The hardware ID for these devices often appears as PCI\VEN_4348&DEV_5053 or similar. Download the Official WCH CH35X Driver Package Here 3. How to Install the CH351Q Driver on Windows (10/11) ch351q parallel port driver
Visit the official WCH website and download the official multi-purpose PCI parallel/serial card installer package (typically named CH35XDRV.EXE or similar). In Device Manager, check the properties of the
Up to 1.5 Mbytes/sec depending on the configured mode. Conclusion The hardware ID for these devices often
Supports SPP (Standard Parallel Port), EPP (Enhanced Parallel Port), and ECP (Extended Capabilities Port).
Note down the 4-digit hexadecimal number next to the first entry (e.g., E000 ).
Ensure the PCIe card is securely seated in a PCIe slot and the computer is turned on. Step 2: Run the Installer Download the from the WCH website. Run the executable file as an Administrator.