Hi Res Version (800 x 306)
6 MB RAM Expansion using 18-pin DRAMs
3 Configuration Jumpers
1 Jumper maps the memory into a 4MB block and a 2MB block giving 6MB total
1 Jumper turns the memory off completely
The card also has a regulator abd a power connector, probably for supplying additional power to the computer because of the low rated internal power supply.
Thanks to Thomas Newsom and Mike Woods