I could never get my buttons to preform properly... I was constantly reconfiguring them. Windows OS 7... Plenty of RAM...I felt tethered to the computer with the wire, possibly damaging my USB port. If your going to invest in a Mic, I recommend going with the Philips SpeechMike Air, which is wireless and I have had very little, if any trouble programing buttons to do exactly what I want. It's cradle stays on my desk, which means I am never pulling against the USB port and I am free to walk around my office without worry of damaging my computer by the mic and I can focus on what I'm saying.It works perfectly with Dragon Medical speaking. If there is there is an error in transcription, I'm the one responsible, not the mic.