Logitec, works flawless, best ten dollars I ever spent. Now the story gets weird. My son comes over and we set up my wooden chess set and are into a game. Lots of other stuff was going on too. Then it was my turn and I grabbed the mouse.
My son was laughing so hard I thought something would break.
If you're used to a Toshiba laptop+mouse and have the touchpad turned off, and you use someone else's non-Toshiba laptop with a mouse, bizarre things happen when you use the keyboard.