Startech 92x25mm ball bearing quiet case fan w tx3 connector this quiet dual ball bearing 925cm case fan offers a cost effective solution for replacing a non functional or noisy fan in your pc powered through a simple tx3 connection to the host computer power supply the 8cm case fan helps keep your computer running at optimal temperatures for stable system performance the startechcom advantage a dual ball bearing design ensures reliability and longer life a built in tachometer a