Epson CW3S16 Operation Manual page 150

Expansion Slots – JA1 to JA6, JC1 to JC4
The system board contains six expansion slots comprised of two
basic types as follows:
Two B-bit slot for PC/XT boards
l
Four 16-bit slots for PC/AT boards or B-bit PC/XT boards
l
Keyboard Port – CONN1
The keyboard connector CONN 1, is a 5-pin DIN connector
for keyboards that are compatible with the IBM AT keyboard.
Parallel Port – CONN6
Connector CONN6 on the system board provides a standard
Centronics 25pin parallel interface.
Table B-2.
System Mother Board
B-5