The UCM-UCSI ACPI Device driver is related to the Universal Serial Bus (USB) Type-C and USB Type-C connector system interface (UCSI) in Windows systems. It helps manage USB Type-C ports and their various functions, such as data transfer, power delivery (PD), and display connectivity. This driver is primarily for systems that include USB Type-C ports, especially those supporting USB Power Delivery (USB PD) and Alternate Modes (e.g., DisplayPort).
The ACPI part refers to the Advanced Configuration and Power Interface, which is a standard used for managing power usage in computers. In the case of UCM-UCSI, it allows Windows to properly handle and control the connection to USB Type-C devices, ensuring that features like charging, power management, and device enumeration work as expected.