Dell Precisions have both a trackpad and a trackpoint and feature 2 times 3 buttons (one row on the top and one row on the bottom of the trackpad). I think tha

Dell Precisions have both a trackpad and a trackpoint and feature 2 times 3 buttons (one row on the top and one row on the bottom of the trackpad). I think that old Thinkpads always had a middle button because it was used combined with the trackpoint to scroll.