If you are compiling your own kernel (common for Arch or Gentoo users), ensure you have support enabled. Specifically, look for: CONFIG_X86_INTEL_LPSS CONFIG_MMC_SDHCI_ACPI
When this appears as an "Unknown Device" in your Device Manager with a yellow exclamation mark, it usually means your operating system lacks the specific driver needed to communicate with the internal eMMC storage or SD card slot. What is the ACPI 80860F14? Acpi 80860f14
If it fails, use and point it to the folder where you extracted the Intel platform drivers. For Linux Systems : If you are compiling your own kernel (common
Select from the dropdown menu. If you see ACPI\VEN_8086&DEV_0F14 , you have confirmed you are looking for the Intel SD Host Controller. ensure you have support enabled. Specifically