Do you mean case has only USB3 ports ? If so, only way to have real USB3 is to ad PCI/PCIe USB3 card. Something like this https://www.amazon.com/StarTech-com-Port-SuperSpeed-Adapter-Power/dp/B00AWP9LMGI've just recently built a computer and my MOBO only has a jusb 2.0 and I only have a USB 3.0. They don't fit so do I need to get a converter to make them fit? I'm also guessing this is the reason to why none of my USB ports will work.
That model will not provide internal USB 3.0 ports.Do you mean case has only USB3 ports ? If so, only way to have real USB3 is to ad PCI/PCIe USB3 card. Something like this https://www.amazon.com/StarTech-com-Port-SuperSpeed-Adapter-Power/dp/B00AWP9LMG