Dreamcast GDEMU 
 
Compatibility:
 
This only works with the VA1 dreamcast revision.
There is a really good install guide here.
 
Versions 5.51b
 
This is a known good firmware version.
You can update the firmware easily using an sd card.
 
Official documentation is here
 
 The GDEMU replaces the optical disc drive on the sega dreamcast.
 
Run dreamcast games from an sd card
Removes the need for damaging increasingly rare and expensive physical cd games.
No more cd drive read errors, laser and motor faults.
 
I recommend using a good quality sd card such as the sandisk Extreme 128GB
 
I connect and test each board before posting
I cannot therefore replace/refund damaged boards.
As a minimum it is recommended adding a resistor to the power rail 
I stock dreamcast rePSU power supplies.
 
Easy to install with no soldering required
 
Install tips: 
Make sure the board sits flat to avoid a poor connection!
I recommend drilling an extra mounting hole.
The board should be fixed a 3 points.
I include 3 hex standoff's and 6 screws.
 
Screw each standoffs to the shielding from the underside.
 
Email me at david@oldskoolconsoles.com with any queries