ASUS Prime Z370-A USB 3.1 Gen 2 Port not working (Catalina 10.15.4) (Solved)

[imikejackson]

I have successfully installed Catalina 10.15.4 on an ASUS Prime Z370-A with Core i7 8700K and integrated graphics. Most everything works except the USB 3.1 Gen 2 C Port on the back plane of the motherboard. I have tried mapping the ports using all the advice from the various posts/tutorials but I just cant quite seem to get the proper setup working. This is minor and everything else works. I used the "Fenvi" card for BT/Wireless and I boot from a Samsung 970 EVO. I used Clover for the boot process.

If anybody else is using this exact board for their Hackintosh and has that port working could you post/send your EFI folder? Also what version of the BIOS are you using? I think I am on the latest (can't check right now).

I'm happy to post my EFI folder for inspection or what ever else is required.

 

[karxarias]

Is it possible at all since USB 3.1 Gen2 on this board is provided by an Asmedia controller?

 

[imikejackson]

Not sure. More looking for the Asmedia says I should be trying rehabman's generic Usb kext.

 

[imikejackson]

Just to update this thread if anyone is also looking. Running macOS 10.15 Catalina the ASMedia are natively supported. I just needed to actually enable them in BIOS. I guess at some point during the install I had disabled it. The only hardware I had to test it was an OWC Envoy which wrote at 500MB/sec so I am at least getting 5Gbps on the port. I don't have anything that would test out the full 10Gbps speeds.

 

[Aldaro]

Both ports on this controller use to work perfectly for me, but now I can't get anything higher than 5Gbps. I have a screenshot from when I finished one of my port maps back on March 14th, 2020 which shows this.

When the ports stopped working at 10 Gbps, I thought it'd be a good idea to redo the port map, just to be 100% certain that I did in fact set this up correctly. Unfortunately, that did not resolve my issue, and I'm still looking for a solution to this problem.

 

[Pcdavis3]

@Aldaro, did you ever get this issue resolved? I have the exact setup you have and am still showing 5Gbps on the USB 3.1 gen 2 port.