You should see: parport0: WCH PCIe adapter, irq 16, I/O 0x378
These chips typically support SPP, PS2, EPP, and ECP modes. If your software requires a specific mode (like EPP for CNC machines), you may need to adjust the settings in the "Port Settings" tab of the device's properties in Windows Device Manager. wch pci express parallel driver
your computer once the "Installation Success" message appears to ensure the LPT port is properly registered in Device Manager. Troubleshooting You should see: parport0: WCH PCIe adapter, irq
The WCH chipset supports three modes:
Windows update often overwrites the WCH driver with Microsoft's generic driver. Disable automatic driver updates via Group Policy (gpedit.msc) → Computer Config → Administrative Templates → System → Device Installation → Prevent installation of devices not described by other policy settings. Before starting, identify the exact chip on your PCIe card
Here is the definitive process for installing the driver. Before starting, identify the exact chip on your PCIe card. Look for a small square chip labeled "CH382" or "CH351."
For three decades, the humble parallel port (IEEE 1284) was the gold standard for connecting printers, plotters, CNC machines, EPROM programmers, and industrial control equipment to PCs. However, around 2010, motherboard manufacturers began phasing out the legacy PCI slot and the built-in LPT (Line Print Terminal) port. By 2015, finding a new PC with a native parallel port became nearly impossible.