Epson EQUITY 3865X/20 PLUS - Manual (Page 29)

5 Connecting the Keyboard
Follow these steps to connect the keyboard:
1. Hold the keyboard cable connector so the arrow indicator
on the housing faces up. Insert the plug into the appropriate
socket, marked with a keyboard icon, as shown below.
keyboard connector
arrow indicator
Caution
Although the keyboard and mouse connectors are
physically identical, they cannot be used interchangeably.
Be sure to insert the keyboard plug into the keyboard
socket.
1-12 Setting Up Your System