NEC Image P100E Series Manual page 150

3. Set the jumper blocks over pins 2 and 3 on J33 and J34
as shown in the following figure.
J34
Secondary Cache
Socket
J33
Install the upgrade processor in the upgrade socket as
4.
follows.
NOTE: The speed of the upgrade processor
(90 MHz or 100 MHz) must match the speed of the
factory installed processor (90 MHz or 100 MHz).
Locate the upgrade socket on the system board (see
the previous figures).
J33
Upgrade Socket
1 1
J34
2 2
3 3
Setting the upgrade jumpers
Adding Options 7-25