DreamPort: Sega Dreamcast Bluetooth & Power Supply Upgrade
The DreamPort by DreamMods is an upcoming product that will add 4 bluetooth controller ports to Dreamcasts (for use with the DreamConn), and replaces the problem-proned and hot-running power supply. Their website shows a picture of the DreamPort prototype board. Source: http://www.dreammods.net/dreamconn.html