Drop in, easy to use replacement for power supply (no modifications necessary). More space inside for DreamCast for other . for DreamCast PSU is compatible with all regions and all versions for DreamCast. It works with both, I personally use it in 2 different consoles, one with a GDEMU and one without. Description for DreamCast PSU is a simple, quick-install backup power supply for DreamCast that not only reduces heat inside your console from the power supply, which can help extend the life for DreamCast, but also frees up some much needed internal space for any other you may have or want to install. It is also fully compatible for GDEMU and USB-GDRom as well as the for DreamCast GDROM disc drive. size:12x9x2cm Material:PCB colour:White Package Contents: 1 Board Only the above package content, other products are not included. Note: Light 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.