Dell has gone the way of HP with its use of proprietary connectors. The power supply only has 2 connectors, both of which must go into the motherboard. It has 2 PCIe x16 sockets. WHY if the power supply doesn't have any doggone connectors available?! And then to replace it, I had to buy a separate adapter because, wouldn't you know it, their proprietary motherboard doesn't take the standard 24-pin connection, but an 8-pin one.Then, they place this ridiculous level on the case to supposedly hold the power supply in place, but all it does is limit the size of the space available so that I can't easily replace the power supply. The doggone thing has 4 screws to hold it in place... Why do we need the sliding level? I just removed the slide altogether and was finally able to install a USABLE power supply that allowed me to install a GPU. It ought not be this complicated. I'm resolved that the next PC I get, I'm building the doggone thing myself.