Ch351q Parallel Port Driver Jun 2026

Note: In Windows 10 and 11, the operating system strictly manages PCI resources. You cannot manually check the "Use automatic settings" uncheck box to force the address back to 0x378. The remapping must be done inside your target software. 7. Troubleshooting Common Errors Error: "Device Cannot Start (Code 10)"

The CH351Q is a high-performance PCI interface chip designed by Nanjing Qinheng Microelectronics (CH340 series manufacturers). It is widely used to add legacy IEEE 1284 parallel (LPT) ports to modern desktop computers. Because modern motherboards have completely phased out native parallel ports, this chip bridges the gap for users who still rely on legacy hardware.

Standard 32-bit PCI bus, conforming to PCI Specification 2.2.

The CH351Q chip is engineered to bridge the 32-bit PCI bus with industrial-standard parallel and serial communication protocols. ch351q parallel port driver

You should download drivers exclusively from verified platforms to prevent system instability, corrupted registry strings, or malware infections.

If your computer shows an "Unknown PCI Device," use the following steps to verify it is a CH351Q:

Using the official driver prevents system instability and device recognition errors. Official Download Sources Note: In Windows 10 and 11, the operating

Extract the CH35XDRV.EXE contents using a zip extractor (like 7-Zip) to a dedicated folder.

Supports Standard Parallel Port (SPP), Enhanced Parallel Port (EPP), and Extended Capability Port (ECP) modes.

The name of the you are trying to connect? Any specific error codes showing up in your Device Manager? Supports Standard Parallel Port (SPP)

Open the computer case and insert the CH351Q PCI card into an available PCI slot.

The parport_pc module should load automatically, creating an interface at /dev/parport0 or /dev/lp0 .