![]() ![]() ├── HS01 (Front Panel P1 USB2 - Spliced internally, for BT Controller - see below) │ └── PRT8 (Front Panel P6 - Card Reader USB) │ ├── PRT7 (Front Panel P5 - Card Reader) ├── EHC1 (Bus servicing internal USB2 headers) Due to the above routing weirdness, and the requirement for the Bluetooth controller to sit on the XHC bus as an "internal port", it's necessary for one of the front panel USB3 ports to be re-purposed as an internal port.This is observed in both Windows and MacOS. Regardless of selected BIOS settings for XHCI/EHCI, both rear panel USB3 ports are routed via the EHC controller when a USB2 device is connected. XHCI/EHCI routing on this board is very weird.These need to be injected with a special AppleUSB20InternalIntelHub record, as opposed to the top level controllers registered with AppleUSBEHCIPCI. The 7-series USB chipset has top level hubs on the EHC busses.This issue is reproducable in both Windows and OSX After a fair bit of research this is found to be a common issue and is the reason for random USB3 disconnection during use. The GA-Z77X-D3H is notorious for having power delivery issues on the internal front-panel header.This injector kext was created with USBMap via this guide. The injector kext can be found in OC/Kexts/USBMap.kext. However it is now possible to inject ports using a simple injector kext instead of using UIA. USBInjectAll (UIA) was previously used to inject ports using custom SSDT. Works OOB with AppleALC using inject=5 ⌨️ USB Internal Graphics Deep Standby Mode: Enabled.Internal Graphics Standby Mode: Enabled.Other PCI Device ROM priority: UEFI OpROM.Intel Virtualization Technology Enabled.Saved configurations can be found in resources/bios-config/ Diffable Settings: Bootloader config is revisioned via git: (this repo) □ Hardware BIOS Settings OpenCore used as boot loader (Clover replacement). ![]()
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