I would like to replace the fan in my TiVo HD XL. From what I can tell, it is a standard 70mm case fan, but it looks like it has a two pin connector. I checked NewEgg and Microcenter, but didn't see a fan like this. Does anyone have a recommendation on where I can purchase a good replacement fan? I see that DVDUpgrade and Weaknees have them for $20 plus shipping, but I'd prefer to pay less and know more details about what I am getting. Thanks.