Actually, it's missing a picture of both and we know this because it says "Both the OLED display and the D-pad are located on the MM830’s right" - ironically enough the word "side" is missing as well lol.
The D-Pad and OLED display are right there in the photo. The screen is what's displaying the Cooler Master Logo and the words "Make It Yours" while the D-Pad is integrated into the textured grip. It's sort of an elongated D-pad though, with the rear button further back then would be expected on a typical D-Pad. Really, it seems to just be four buttons that happen to be connected, more than anything. The article does describe it as being on the right, but I guess it could be argued that it's on the right when looking at it from the other side. : P