Epson ActionNote 4SLC/25 User Manual page 75

2. Place the coprocessor onto the socket so that the round
indentation indicating pin 1 is in the upper left corner. Then
push it down.
3. Replace the keyboard as described in the next section.
The computer automatically detects when a coprocessor is
installed. When you turn on the computer, the system
configuration screen shows that a numeric coprocessor is
present.
Caution
If you need to remove the math coprocessor, do not try to do
it yourself. This procedure requires a special extraction tool.
Contract your Authorized Epson Servicer.
Connecting Optional Devices 4-17