I ordered the unit with no hard drive and 16G of RAM. It's a great system since it comes with no added software. You install what you want, not what the dealer wants you to have. I'm gonna geek out a little and admit that I was pleasantly surprised to see it came with a serial port. Since I tinker, that is a great addition. I had to add a hard drive, which was no big deal. It does not support HDMI, but has displayports on the back. There are two USB2 and two USB3 jacks on the front, which is great for quick external hard drive swaps. I love it and will probably buy another.