Epson 20 - Manual (Page 25)

4. Push the cable into the notch at the left side of the computer, as
shown below, so the cable leads away to the side of the computer.
5. Close the keyboard cable cover.
You can change the angle of the keyboard by adjusting the legs on
the bottom. Turn the keyboard over and lift each leg upward until it
locks into place, as shown below. You can lock the legs to a low or
high position, or leave them flat.
Setting Up Your System 1-11