NEC PC Engine HE System

Hello. Ive recntly gotten a NEC PC Engine system, about 6"x6"x1" in size. It has a port that's around the size of a PS/2 port, but with different connections. The system uses a cool-looking card system, labeled as HuCARD, and I've got two games, PAC-LAND and a game that's entirely in Japanese labeled as THEthen lots in Japanese, I'll try to scan it in later, in a monocrome format. On the bottom, it says NEC PCEngine Japanese, then at the far right, it says PI-TG001 , then one line down, more Japanese writing, then at the far right, 4W writen. Then, another line down, it has Japanese, then at the far right, (PAD-105,PAD-106) Then there's an entire line of Japanese writing, then another line down, the words MADE IN JAPAN. Below that, in another indent, is the number that was pin-printed as 8Z14066H . At the right of the system, there's a port labeled ANT SWITCH, which I'm guessing I connect to a TV monitor. There's no port for sound. On the same location on the left, there's a thing labeled AC ADAPTER, which I don't currently have. Can I use a Nintendo adapter for this? A Sega? Any information would be appriciated. BTW, the controller seems to be a slightly-stylaziied version of an origional NES controller, with buttons labeled II and I, in the place of A and B, a select and Run button (Run in the place of Start) and a standard digital-arrow pad, as found on most gaming systems. Thanks, Tim D. Hotze