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What is this thing attached to my genesis model 2 serial number mk 1451 ive never seen it before it cane with this one for some reason : r/SEGAGENESIS
![Canadian Sega Genesis: A Collecting Guide/Blog - Page 2 - General Collecting Discussion - Video Game Sage Canadian Sega Genesis: A Collecting Guide/Blog - Page 2 - General Collecting Discussion - Video Game Sage](http://i.imgur.com/hveP2tA.jpg)
Canadian Sega Genesis: A Collecting Guide/Blog - Page 2 - General Collecting Discussion - Video Game Sage
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