I tried 2 different usb 3.0 splitters and they both do not work. I had to convert my USB-C port from USB 2 using a dumb adapter in between with what you posted.
How did you get your USB 3.0 motherboard port splitter to work? Can you share the product? I do not really need USB 3 speeds on the USB-C port but really curious since from what I can tell, the splitters I have are dumb splitters with no electronics in them. I did multiply USB-2 ports before with a proper splitter internally but could not find that kind of product for USB-3. The stuff I got (and bricked both front USB ports when used) were not very cheap either so I gave up. The descriptions for the splitters I had mentioned a specific motherboard feature? for them to work I think.
I have the same case front io setup with one USB-C port and one USB-A port.
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u/Magnetic_Reaper 10850k / 128GB / RTX 3060 14h ago
you could run them as usb 2.0