ucsicontrol

About this tag
The ucsicontrol tag on WindowsForum.com covers discussions about the USB Type-C Connector System Software Interface (UCSI) and its implementation in Windows. Content focuses on how Microsoft requires PC makers to implement UCSI and ACPI firmware hooks to enable reliable USB Type-C notifications and power delivery. Topics include driver integration with UcmCx, WHCP certification requirements, and troubleshooting issues related to OEM firmware support. The tag is relevant for users dealing with USB-C connectivity problems, power delivery inconsistencies, or alternate mode failures on Windows systems, particularly those involving hardware-level UCSI compliance.

  1. Windows USB-C Notifications: OEM ACPI/UCSI, UcmCx, and WHCP

    Microsoft has quietly pushed PC makers to stop treating USB Type‑C as merely a cosmetic port and to implement the platform-level hooks Windows needs to deliver consistent, actionable notifications when Type‑C connections misbehave — a move that aims to end years of “plug‑and‑pray” frustration...
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    • acpi acpidescriptors devicediagnostics displayport hlk mutt oem strategy pld power delivery thunderbolt ucmcx ucsi ucsicontrol upc usb-c whcp windows
    • Replies: 0
    • Forum: Windows News