CaseySJ
Moderator
- Joined
- Nov 11, 2018
- Messages
- 18,923
- Motherboard
- Asus ProArt Z690-Creator
- CPU
- i7-12700K
- Graphics
- RX 6800 XT
- Mac
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- Classic Mac
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- Mobile Phone
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A few months ago we went through an extensive USB troubleshooting exercise in which a number of USB 2 devices connected to motherboard ports were causing connection instability. We recommended segmenting USB 2 devices to their own self-powered hubs (more than one hub depending on number of USB devices). The final recommendations were posted here:I removed the V3 and yes Inject Kext is enabled, I can see thunderbolt into IORegistryExplorer, but for now the usb issue is still there. I tried to disconnect every usb and thunderbolt device and check the speed, but it's always the same

[SUCCESS] Gigabyte Designare Z390 (Thunderbolt 3) + i7-9700K + AMD RX 580
I have that same card and a brand new unopened Magic Mouse 2. I'll test it out tomorrow. I connected the mouse with the computer with the lightning-to-USB cable and it works now!!!! Thanks all!

If your situation is materially different from that post, please list as much relevant detail as possible. For example, what USB devices (make/model) are connected, to which ports are they connected, are there any powered USB hubs, how are you measuring disk read/write speed, do the same disks perform any better when connected to a real Mac or Windows PC, etc.
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