Wch Ch382l Driver Windows 10 Guide

The CH382L is a PCI Express bridge chip that converts one PCIe lane into two independent high-speed asynchronous serial ports. Key specifications include:

After installation:

Right-click each > Properties > Resources tab. Check that no IRQ or I/O range conflicts exist.

Test with a loopback connector or directly connect a printer.

Registry check:
Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CH38X – existence confirms driver loading.

Integration with Programming Languages

Multi-Port Management

Unblock and extract:

Disable driver signature enforcement temporarily (if driver is unsigned): wch ch382l driver windows 10

Install the driver:

Re-enable driver signature enforcement:

Verify:

The safest and most reliable location is the official WCH website. Note that WCH’s website navigation can be tricky; follow these steps:

Alternatively, use the direct link to the serial driver suite (often named CH341SER.EXE works for CH382 as well, though it is primarily for USB-to-serial chips). WCH maintains a unified driver for many of its serial controllers. For CH382L specifically, look for CH38X or CH382SER in the filename.

Cause: Windows 10 security features blocking unsigned driver. The CH382L is a PCI Express bridge chip

Solutions:

If you force-install the legacy parport.sys driver, Windows 10 may recognize the card but lose ECP/EPP features. Not recommended.