To the right of the keyboard is the touchpad, which, at 3 by 1.8 inches (WD), is smaller than the touchpads on most consumer laptops. It's large enough to be useful, though there were times, when performing one gesture or another, that I found myself wishing for a bit more swiping space. Below the pad are the left and right mouse buttons; the left button, which generally gets the most use, is slightly longer than the right one. Installing the K400r is simply a matter of plugging the dongle into an available USB port. It will automatically install the software, and then you're ready to go. I tested it on an all-in-one PC, as well as a laptop, both running Windows 8.1, and a Windows 7 laptop. I'd describe my typing and touchpad experience using the K400r as solid, if unspectacular. The keyboard is a little cramped, and the keys feel loose, but typing is reasonably smooth. The touchpad, although small, is nice to have. Most of the function keys worked as billed. Pop the tiny Logitech Unifying receiver in a spare USB port and leave it there. You can even add other Logitech devices using the same receiver. Plug it. Forget it. Add to it. An extended range adapter is supplied in the box which locates the receiver a couple of inches away from the PC chassis, so increasing signal strength. Keyboard layout