Ch351q Parallel Port Driver ^new^ [ No Login ]
The CH351Q Parallel Port Driver: A Comprehensive Guide
- Ports (COM & LPT) → WCH PCI LPT Port
- Right-click it → Properties → Resources. Make sure you see an I/O Range like
0xDFA8 - 0xDFAF. Note: It will NOT be 0x378. Old software expecting hardcoded 0x378 will still fail.
Built-in FIFO: Each port features a 16-byte depth FIFO buffer to minimize data loss during multitasking. ch351q parallel port driver
Part 5: Linux and macOS Drivers
Linux (Kernel 4.x to 6.x)
The CH351Q is supported by the Parport subsystem with the parport_pc module, but you may need to manually bind it. The CH351Q Parallel Port Driver: A Comprehensive Guide
Host Interface: The chip supports both USB (full-speed 12 Mbps) and PCI Express (x1 lane) host connections, depending on the variant. This flexibility allows manufacturers to produce adapters for different system configurations. Ports (COM & LPT) → WCH PCI LPT
For persistent configuration, add options parport_pc io=0x378 irq=none to /etc/modprobe.d/parport.conf.
: Execute the installer. It will pre-install the drivers into the Windows Driver Store. Physical Install
Driver File Details
- File name example:
CH35XDRV_Setup.exeorCH35X_DRV.ZIP - INF file:
CH35X.INF(contains hardware IDs likePCI\VEN_1A86&DEV_0351)
: 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