Dynabyte --  32K Static RAM Board
This was a later Dynabyte RAM board

Two versions of the board were supplied (with 250ns & 450ns RAMs).  The board could be addressed to any 4K boundary. There were no DMA restrictions and no wait states generated. Plenty of heat sinks!  Other than that I have no information about the board.  
If anybody could share the manual (or better picture) please let me know.