I credit the IBM Model-M with contributing substantially to the continued survival of the PS/2 port in this era of USB dominance. The PS/2 port has been around

I credit the IBM Model-M with contributing substantially to the continued survival of the PS/2 port in this era of USB dominance. The PS/2 port has been around since 1987 and USB since 1996. Yes, USB is now twice as old as PS/2 was when USB was introduced! PS/2 ports have some advantages over USB that might have kept them alive in certain niches, but there are so many cherished Model M keyboards still in use (this post is being typed on one made in 1993) that no self-respecting motherboard designer would ever leave the PS/2 port out!