SRL for [converts]: In late September , IBM began shipping a plug - in card that [converts] its PS/2 model 70 - A21 from a 80386 machine to an 80486 machine .
ARG-0: a plug - in card | R-ARG-0: that | ARG-1: its PS/2 model 70 - A21 | ARG-3: from a 80386 machine | ARG-2: to an 80486 machine