OCC has published a review on the NZXT IU01 Internal USB Expansion
A quote from the article:
>> NZXT IU01 Internal USB Expansion Review
After using the IU01, it is clear no compromises were made when NZXT designed it. The black PCB and sleeved wiring guarantee a sleek and clean appearance in your case. The Molex power guarantees you will have enough power for any USB device that you plug in. The IU01 accomplishes all this, while maintaining the same USB performance as you would observe with on-board USB ports.
>> NZXT IU01 Internal USB Expansion Review