IBM THINKPAD 760C/CD (9546) - Manual (Page 172)

Note
The system board fits exactly in place in the base
cover. Align the system board carefully when
removing or reinstalling. Do not force it. Be careful
not to damage the input jacks on the left side of the
computer or the PCMCIA slots on the right side of the
computer.
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160 IBM Mobile Systems - ThinkPad HMM Volume 3