# Fixing Embedded Controller (SSDT-EC/USBX)
# What this SSDT does
The purpose of SSDT-EC/USBX is a couple things:
- On desktops, the EC(or better known as the embedded controller) isn't compatible with AppleACPIEC driver, to get around this we disable this device when running macOS
- AppleBusPowerController will look for a device named
EC
, so we will want to create a fake device for this kext to load onto- AppleBusPowerController also requires a USBX device to supply USB power properties for Skylake and newer, so we will bundle this device in with the EC fix
- On laptops, the EC is used for hotkeys and battery so disabling this isn't all too ideal. Problem is our EC's name isn't compatible, so we will create a simple "fake" EC device that will satisfy Apple
So TL;DR:
- EC is embedded controller
- Desktops will want real EC off, and a fake EC created
- Laptops will just want an additional fake EC present
- Skylake and newer devices will want USBX as well
# Methods to make this SSDT
For the EC fix, there are 3 methods you can choose from: