While the Laser 128 has a 15 pin video port, it is rather different from the 15 pin video port on a //c. Unlike the //c, it contains all the signals (R,G,B,I,VSync,HSync) you need to drive a CGA color monitor. Laser sold simple 15 to 9 pin adapters to do just that. I have 2 or 3 in my basement. That and the built-in parallel printer port were real improvements over Apple's design.