Ch351q Parallel Port Driver Direct

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!

, designed to provide dual serial ports or a single parallel (printer) port Nanjing Qinheng Microelectronics Co., Ltd. Official Driver Download ch351q parallel port driver

: This usually indicates a driver signature issue on 64-bit Windows. Ensure you are using the latest version from WCH which includes a valid digital signature. Port Not Found In my case, I edited the registry under: