Disappointed with the purchase of a CSL Sprint 5766 Win8 I returned, I discovered, for 10 more, this CPU that works satisfactorily. While the tower is "cheap", but the material is good: SATA3 (2 times faster), USB3 and preinstalled (ar 2 and 1 front) .At least the CD release button operates normally. Finally Win7 Win8 is less painful than that "feels" the fiasco at the "Vista"