I just hooked up my refurb Dell 3007 that I found using the hotdeals (nice) for 650.00. Anyhow, I was looking at the revision that I received (most people seem to have gotten an A02) and noticed mine is A01. The monitor is pretty nice, a bit scuffed up on a few spots near the bezel and some weird sticky stuff on the back (dont want to know). There is a low humming that comes from it though. I was wondering if anyone knows the differance from the A01 and the A02 models. I have the advance exchange for this and am pondering wether to send this one back for the slight buzzing noise, especially if A02 fixes other issues as well. Thanks!