82545EM, 82545GM, 82546EB and 82546GB Gigabit Ethernet Controllers. The 82545EM and 82545GM Gigabit Ethernet Controllers are compact components with integrated Gigabit Ethernet Media Access Control and physical layer functions. The 82546EB and 82546GB Dual Port Gigabit Ethernet Controllers is a single, compact component with two full integrated MAC and PHY units
