SPONSORED LINKS
you cannot count on backward compatibility at any point. IBM makes ZERO effort to accomodate previous machines if there is any respect in which they can improve a new machine. FOr example, the batteries on the 760CD are identical to those on the 755CX, except 1/8" thinner, and the old ones do not fit. The old hard disks are just *slightly* bigger and do not fit, and of course the memory is totally different.