This is the one with the 2 USB ports on the side, and the hotkeys up top (not ergonomic though). It was $38 a couple weeks ago, and they dropped it down and placed it in the clearance area. I like the USB ports since I am using a hub right now and would rather remove that from my desktop.
MS makes great keyboards, BTW. Too bad they can't match the software to them.
MS makes great keyboards, BTW. Too bad they can't match the software to them.