There is also a notched comer on the math coprocessor, as shown below.

Align the notched corner of the coprocessor with the notched corner of its socket. The notched comers must be aligned for the coprocessor to fit into the socket, so be sure the alignment is correct before you proceed to the next step.

Caution

If you insert the math coprocessor in the wrong position, you could permanently damage it.

5-28 Installing and Removing Options