Goldstar GW451C v2
The GW451C is a classic 8-bit ISA card providing following I/O ports:
1x game port
1x parallel port
2x serial ports (via ribbon cables)
It's configurable using jumpers, as explained in the attached manual.
IMG GW451C_1.jpg
IMG GW451C_2.jpg
RESERV GW451C_manual.pdf