As soon as I received this in the mail I opened it up and tried to install my GeForce 960 card and booted it up. Screen said I needed to plug a PCI connector to the card. So I looked and of course the PSU didn't have any extra connectors for expansion. So I bought a new PSU at frys electronics and stalled it. Then it wouldn't power on at all. So I just took everything to frys version of geek squad and they just called me to tell me that the PSU that I bought from them isn't working and the hard drive is either dead or about to die. I then asked frys for a refund of my money on the PSU and their labor in figuring out they sold me a bad PSU and they said no so I am escalating to a manager at the moment. Depending on how they respond I may need to teach them what the DTPA law is in Texas and show them my bar card. We will see.Also this seller claims this unit is great for expansion. I don't see it. All two ram slots were taken and no additional connectors on the PSU. So what can you upgrade to with the exception of a bigger/better hard drive or a different cd drive? Well if your unit is like me then you will be forced to upgrade your hard drive because the one that ships is no good. I had already bought a SSD to install right off the bat so no harm no foul with me but geez come on have some ethics. This shouldn't be advertised as "big on expansion". That's obviously why I bought it. But alas you live and learn. Hope this is helpful. Btw this is my first review on Amazon to my knowledge and I have been a member for almost a decade. That should tell you something.