This is one of two original installation disks for Sound blaster pro 2. The other is sbpro1-2.exe
These are the original setup discs. ie Self extracting versions of the same named zip files on this site.
This must be installed prior to upgrading with the intermediate WFW sbp2wu.exe and sbp2du.exe upgrades.
NB The final upgrade is sbp2up.exe
CT1600 printed along top edge of board. CT1336 chip on board.