ASUS manufactures many sound cards but only a few great USB solutions. In order to correct that, they launched a wide variety of USB-powered products, and we will now take a close look at the U7, a 7.1 sound card powered via USB only, keeping cable clutter at an absolute minimum."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips