is a specific ACPI Device ID (Advanced Configuration and Power Interface) representing a UCM-UCSI ACPI Device . It is primarily used by modern operating systems to interface with the USB Type-C Connector System Software Interface (UCSI) . Core Functionality
UCSI typically uses a "mailbox" system where the OS writes commands to a memory region, and the Embedded Controller (EC) or BIOS processes those commands to change port settings. pnp0ca0
The "pnp0ca0" device might appear on your system for various reasons: PNP0CA0 is a specific ACPI Device ID (Advanced
Since this device manages power flow to the GPU, it is tightly linked to your motherboard's chipset. The "pnp0ca0" device might appear on your system
Negotiating how much power is sent or received (e.g., fast charging a laptop or powering a phone).
Configure it with:
