Dlusb-c120.exe May 2026

If the file is missing but you know it was legitimate:

Do not download dlusb-c120.exe from random DLL/file download websites. These are often malware traps. dlusb-c120.exe

dlusb-c120.exe is not a standard Windows system file. Instead, it is a third-party driver installer executable, primarily associated with USB-to-UART bridge controllers manufactured by Silicon Labs (Silicon Laboratories) and distributed by various hardware vendors. If the file is missing but you know it was legitimate:

The "DL" in the filename often stands for "Download" or "Driver Loader" , while "USB-C120" refers to a specific driver package version or a device profile for a USB-to-serial chipset—commonly the CP210x family. Do not download dlusb-c120

Users typically encounter the following error messages:

These errors can appear during system startup, when plugging in a USB device, or while running hardware-specific software.

Do not download dlusb-c120.exe from generic driver websites (e.g., driverdr.com, allexe.com). Instead: