Complex sentence: In 2001, Intel delivered ICH3, which was available in two versions: the server version, ICH3-S, running with the E7501 Northbridge, and the mobile version, ICH3-M, which worked with the i830 and i845 northbridges.
Split into simpler sentences: In 2001, Intel delivered ICH3, which was available in two versions. And the mobile version, ICH3-M, which worked with the i830 and i845 northbridges.