Prohibit the use of chargers that output more than 12v The DreamCast PSU is a simple, quick-install backup power supply for the SE GA DreamCast that not only reduces heat inside your console from the original power supply, which can help extend the life of your DreamCast, but also frees up some much needed internal space for any other mods you may have or want to install. It is also fully compatible with the GDEMU and USB-GDRom as well as the original DreamCast GDROM disc drive. Features Small Size, Just 48mm x 43mm (1.89in x 1.70in). Drop in, easy to use replacement for original power supply (no modifications necessary). Utilizes your original DreamCast power button. Runs from an external 12v 3amp power supply ( included). Less heat inside your DreamCast means that will potentially last longer. More space inside your DreamCast for other mods. The DreamCast PSU is compatible with all regions and all versions of the DreamCast. It works with both, I personally use it in 2 different consoles, one with a GDEMU and one without. Package includes: 1x DreamPSU 1x Adapter(12V)