Hello. I've spotted a reasonably priced ECS on ebay, but it doesn't have an adapter. The only ac/ac adapter I could find online is a 12v 1a adapter with a 5.5mm outside diameter and 2.1mm inside diameter. Is 5.5mm too big or will it maybe squeeze in? I would also like to know if the ECS will work with the Intellivision 1, or if it will only work with modification. Thanks.