1 Left of DBV-200 SH and DBV-200 SG. Both have what I believe is the latest software that was available for them, V2.70 ID 044P/045P
These work in Bally S5500 and V5500 and WMS 401
DBV-200 SH is Eprom based $40 plus shipping (Note one side of the brown connector is broken off which doesn't affect its operation, but I reduced its price by $5 just because of this fact.
DBV-200 SG is Flash based (Being flash based is a moot point since they have the latest Software. $40 plus shipping
See pictures of each of these units. They are the exact ones you will get if purchasing.