Acer AR180 F1 - Manual (Page 59)

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4 Grasp the installed processor by its edges and lift it out of its
socket.
5 Store the old processor inside an anti-static bag.
6 Remove the new processor from its protective packaging.
7 Install the new processor.
(1) Hold the processor by its edges. Make sure the alignment
tabs on the socket fit the two notch located on the edge
of the processor. The pins are keyed in such a way that
you cannot install the processor in the wrong orientation
without bending the pins.
(2) Insert the new processor in the socket.
(3) Close the retention plate.