Small Size, Just 48mm x 43mm (1.89in x 1.70in). Plug in, easy to use replacement for power supply (no modifications necessary). Utilizes your for DreamCast power button. Runs from an external 12V 3amp power supply ( not included). Less heat inside your for DreamCast means that will potentially last . More space inside your for DreamCast for other . The for DreamCast PSU is compatible with all regions and all versions of the for DreamCast. Colour:White Material:PC+metal Package Contents: 1 Supply Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.