Hi Tech Legion posted a review on the NZXT USB Expansion Module
A quote from the article:
>> NZXT USB Expansion Module Review
The NZXT USB Expansion Module is more than a simple powered USB hub. The NZXT USB Expansion module is also /less/ than your typical powered USB hub. NZXT has taken a very simple idea and moved the powered hub inside the case. No outer hub, no AC plug. The NZXT USB Expansion Module offers you the incredible convenience of up to six fully powered USB ports right on your case, as well as two powered ports internally.
>> NZXT USB Expansion Module Review