I ordered the small version some time ago, tried it with a Linux system, and it's a little slow to respond sometimes, but it worked well enough (and still does). And nothing special was required to get it operating. I plugged it in and it worked. There's no convenient way to customize or modify the operation though---you get what you get. It has a small footprint which is handy for crowded desktops.More recently, I ordered the large version. It only partly works with Linux. The touchpad part worSee full review