Exactly the same as the CoreGrafx apart from a redesigned case.
Taneli Lukka from Finland comments:
Core II is the console where NEC's PCE department seems to lose their heads. There just are no explanations why it was released shortly after Core I. As a whole NEC's game console business is a horrible mess. The original PCE, Core I, Core II and two diffirent CD-Rom drives seem to have been manufactured side by side. New models never really replaced the old ones but merely supplanted them. NEC didn't even keep proper records of their console output or lost them somewhere along the way. This was noticed a few years back when the japanese console magazine Famitsu tried to make a big PCE history article and NEC couldn't provide them with any real production numbers for the consoles nor games for that matter.
We need more info about this console ! If you designed, used, or have more info about this system,
please send us pictures or anything you might find useful.