The first computer was making an awful grinding noise. They sent a second computer that had all four 3.0 ports not working and still an awful grinding noise. They sent a third computer that also had none of the 3.0 ports working and a slight grinding noise that I am sure will get worse. I'm thinking they use cheap quality hard drives in these. The packaging of these shipments were a joke. I am surprised any of them got here in one piece!