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Manual Guide


Step 1 : Deleting old USB kexts

  • Mount your macOS Volume EFI partition using Terminal or Clover configurator.

  • Navigate to EFI/EFI/CLOVER/kexts/ folder and search all the sub-folders for these below listed kexts and delete them, if they exist.

    • GenericUSBXHCI.kext
    • DummyUSBXHCIPCI.kext
    • DummyUSBEHCIPCI.kext
    • USBInjectAll.kext
  • Navigate to /System/Library/Extensions/ folder and delete the above listed kexts, if they exist.

  • Navigate to /Library/System/ folder and delete the above listed kexts, if they exist.

  • Now rebuild your kernel cache by running the below commands in terminal.

### Rebuildcache
sudo chown -R 0:0 /System/Library/Extensions/
sudo chmod -R 755 /System/Library/Extensions/
sudo touch /System/Library/Extensions/
rm -rf /System/Library/PrelinkedKernels/pre*
sudo kextcache -u /

Step 2 : Extracting OEM DSDT

> Using Clover Bootloader Menu [RECOMENDED] :

  • While in Clover Boot Menu press F4 on your keyboard to dump OEM DSDT.
  • Boot to macOS and mount your macOS Volume EFI partition.
  • Navigate to EFI/EFI/CLOVER/ACPI/origin/ folder and copy the DSDT.aml file to your Desktop.

> Using DPCIManager App :

  • Open and click Extract DSDT button on the top left corner.
  • And save the DSDT.aml file on your Desktop.

Step 3 : Patching the DSDT

  • Open and from the menu bar open Prefrences window by navigating to MaciASL -> Preferences.
  • On preferences window click on Sources Tab and hit the + button to add a repo and type the following lines into the blank space and when done close that preferences window.
Name : RyzenUSB
URL  :
  • From menu bar navigate to File -> Open and select your DSDT.aml file which is on your Desktop and open it.
  • Now click on Patch button on the top middle to open patch window.
  • Scroll down on the left navigation pane and find the listed RyzenUSB entry and expand it and select Ryzen USB FIX patch.
  • Then click on Apply to apply the patch to DSDT.aml
  • Now from the menu bar navigate to File -> Save to save the changes.
  • Done, you can now close the App.

Step 4 : Placing the patched DSDT in CLOVER.

  • Make sure your macOS Volume EFI partition is mounted
  • Copy the DSDT.aml from your Desktop and paste it into to EFI/EFI/CLOVER/ACPI/patched/ folder.

Step 5 : Adding patches to Clover Config

  • Open and from menu bar navigate to File -> Open and select your config.plist which is present in EFI/EFI/CLOVER/ folder.
  • Click on Kernel And Kexts Patches section on Clover Configurator window and under KextToPatch box add these following patches.
## For macOS 10.13 / 10.13.1 / 10.13.2 / 10.13.3
    Name             Find               Replace
AppleUSBXHCI    21F281FA 000002     21F281FA 000011
AppleUSBXHCI    D1000000 83F901     D1000000 83F910

## For macOS 10.13.4 / 10.13.5 / 10.13.6 
    Name             Find               Replace
AppleUSBXHCI    C8000000 83FB02      C8000000 83FB11       
  • When done , save the changes by navigating to File -> Save from menu bar.

Now reboot the system for changes to take effect.

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