Ch351q Parallel Port Driver | Works 100% |

In my case, I edited the registry under: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Parport\Parameters – changed IoAddress to match the CH351Q’s starting address. After a reboot, net start parport actually saw the port!

is a PCI-to-Parallel port interface chip produced by WCH (Jiangsu Qinheng Co., Ltd.) ch351q parallel port driver

If you have a device that requires a parallel port connection and your computer doesn't have a native parallel port, the CH351Q parallel port driver is a viable solution. Ensure your hardware is compatible with the CH351Q chip, and you should be able to get your legacy devices up and running with minimal hassle. In my case, I edited the registry under:

PCI Parallel Port Card 32 Bit | Automatic IRQ & I/O Assignment Ensure your hardware is compatible with the CH351Q

Unlike legacy motherboard ports (which usually live at address

button in the driver setup dialog. A pop-up will confirm successful installation. Device Manager devmgmt.msc ) and look under Ports (COM & LPT) to ensure "WCH PCI=>PARALLEL" is listed without errors. Nanjing Qinheng Microelectronics Co., Ltd.