Just a update on how this build is acting in my world, I set up 2 desktop units yesterday and ran into problems with usb devices, The customers are using Logitech wireless KB and Mice and also using usb WD passports . I used the passport on the win 7 machine and backed up their docs and files in both machines first..no issues. Things are rolling good. I fire up the the new box, no issues with the usb KB and mouse in the front bus, all working until I plugged the passport in, everything locks....grrr i plug the passport in the rear bus...once again total lock. After checking the bios and a few other things I was short on time so I used a wired KB and Mouse, plug the passport back in and windows finds it but wants to format it, UGGGG so I had a non usb powered backup drive and When I plugged it in , it worked so I had to backup again from the win 7 machine and got the data over. Same thing on the other machine, The bottom line is I believe I damaged 2 passport drives in this process and had to tell the customer not to use any usb backup device with the wireless KB and mouse plugged in. Both passports were fine until I plugged them into this build. I have used these ASUS mainbords with zero issues and never had issues like this, I have read in places that this build does in fact have usb bus driver issues, until I get this sorted out, word of caution to all.