This is a 16 bit VGA card, with 512K of memory on board (two 256 chips). It runs at 2300 characters per second.
At the end connector:
If used as a VGA card, the screen size will be limited to 800x600 at 256 colors. The connector at the top is a "feature" addition. There are no jumpers to set.
The card connector indicates that this is a 16 bit ISA card.