It's probably DVI-A spec. I was looking at an NEC 1355x yesterday that has the exact same ports on the back. But NEC/Mistubishi calls it DVI-A. From what I was told over @ ars forums. It's still considered Analog and the Image quality is the same or can be even worst than 15pin. What is the point of the DVI port on the CRT? I have no idea, still trying to figure it out.