User`s manual

Green PCI/VL-B/ISA System Board
2-23 u Installation Overview
There are several holes in the socket that are plugged so
the CPU will only go in one way. If you are unable to
easily insert the CPU, please verify pin 1 of the CPU is
being plugged into pin 1 of the socket. The location of
the pin 1 is shown below.
Zero Insertion Force (ZIF) Socket
To install an upgrade CPU do the following.
1. Make sure the handle on the side of the ZIF socket
is up. To raise the handle, pull it out to the side a
little and raise it as far as it will go. The top plate
will slide back. Do not use screw drivers or other
tools to open the socket, or damage may occur to
the system or socket. It may be necessary to initially
apply a small amount of sideways force to free the
handle from its retaining tab.” Once clear of the
tab,the handle will open relatively easily.