For anybody still looking for it, it's very small. Smaller then a dime. There's a designation for it on the component side of the board. F1 is the designation. It is in the general area of the power connector, (where the power cord mates with the supply). Of course, you'll need to swing that connector up and out of the way. The fuse that came out of mine was tiny and, if the unusual shape wasn't enough to trip you up, they also put shrink tubing over it. I will try to add a photo of the fuse.