This is the original install CD for the Umax SuperMac clones S900 and J700 Series, version 3.0 - It contains a full Macintosh System install of Mac OS 7.5.5 - the CD as .dmg was provided by Byteman.
Contains Zipped .iso accessible by most OS's
MD5 checksum: 198b7c0b544ac35c3838b47b6f69fb8f *umax-S900-J700-755.zip
The included SSW 7.5.5 is perhaps the easiest system of this era I've had to install, usually I've installed from those multiple parts for 7.5.3 from Apple and then updated from there to 7.5.5 - It was totally painless to install in comparison, from this CD.
Better still, it runs great on SheepShaver. The screenshots above, excluding the CD scan were taken on my SheepShaver (Old World ROM) install.
I've also tested it on Basilisk II. The CD boots up fine. The installer however refuses to install the System Software, as it detects that BII is not a PPC Mac. I do not recommend this for any Mac other than onto suitable PPC hardware (or SheepShaver).