I am interested in a Mini as a second computer to use with a new standing desk I bought (along with an external monitor mounted to the wall above it). My main machine at my sitting desk is an iMac with a flash drive. I specifically chose the flash drive because of how quiet it is. I do a lot of recording and I don't like spinning hard drives. How audible is the Mini? I was disappointed to learn that no Mini models have a flash drive, so I suspect they do make some noise. I plan to mount it under the desk, so that might help a bit.