Complex sentence: Like the Indy, the O2 used a single MIPS microprocessor and was intended to be used mainly for multimedia purposes; the O2 was SGI's last attempt at a low-end workstation.
Split into simpler sentences: Like the Indy, the O2 used a single MIPS microprocessor and was intended to be used mainly for multimedia. The O2 was SGI's last attempt at a low-end workstation.