@T2R @beyondmachines1 @briankrebs Our rack mount minicomputer was overheating. On opening it up, a family of mice had built a nest above the card cage in the air chamber. The fan blew down on the cards from the air chamber, and the mice used it for a loo. Worked beautifully - for them. The cards were coated with brown goo - no wonder they were overheating.