A13-SOM, USB without the RTL8188CU

[Deulis]

I made a custom hardware that use the A13-SOM module. My problem is that the USB just work with the RTL8188CU. Anything else plugged doesn't work.
If I connect an USB Hub and connect the RTL8188CU to it, then I can connect anything at the others ports and work, but I don't want to use a RTL8188CU only for the USB to work.
What can I do?