There are *many* boards that support more than 2 USB 3.0 ports. In fact (at least in the 7 Series motherboards (for 2nd and 3rd generation Intel Core processors)), most have at least two USB 3.0 ports on the back panel and cable-up support for two USB 3.0 ports on the front panel.
Another way to find a motherboard that suits your need would be doing the following.
1. Find the model of the processor to be used here: ARK | Your Source for Intel® Product Specifications
2. Look for compatible products on the left side of the website.
3. Click on "Find Compatible Desktop Boards
Then you would be prompted with a list of motherboards that are compatible with your CPU, in the specifications page (ARK) for each Intel® board, you will be able to find the amount of USB 3.0 ports available.
I am positive that this information would assist your inquiry, if additional support is required, feel free to contact us back.
This is to follow up on this inquiry you posted in our communities.
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