How does the Oculus Rift hook up to your PC, you ask? With the control box, of course.

Our Development Kit control box is a pretty basic device, consisting of buttons for adjusting the Rift's settings and a handful of I/O ports.

From left to right: HDMI, DVI, Mini USB, and DC-in.

Video input to the Oculus Rift is DVI, but the handy dandy control box is capable of converting your PC's HDMI output to DVI. VGA is not supported at this time.