The program didn't find the device, but did list a string to help me find out what it is.

ATK0110 ACPI Utility

I put the CD that came with the mobo into the CD drive and ran the Intel INF Update which apparently updated something so that device is no longer unrecognized. When I first set up the system I had misplaced the CD and thought it had stayed at the store, so I downloaded all the software updates from ASUS' site. Evidently, whatever they have up on the site is missing something to cover this one item.