Dell Precision 330 - Manual (Page 107)

Installing Upgrades 107
NOTE: Pin 1 of the microprocessor is indicated by a small dot or a
triangle in one corner of the microprocessor. Pin 1 of the socket is
indicated by a small triangle in one corner of the socket. See "
Replacing
the Microprocessor ."
c Carefully set the microprocessor in the socket and press it down
lightly to seat it.
d Rotate the socket lever back toward the socket until it snaps into
place, securing the microprocessor.
Re p l a c i n g t h e M i c r o p r o c e s s o r
8 Install the replacement microprocessor heat sink:
microprocessor pin-1
indicators
microprocessor
microprocessor
socket
socket pin-1
indicator
socket lever