Gigabit Ethernet and Fast Ethernet are becoming increasingly popular for customers who need cost-effective and simple connectivity for Internet gateway, peering, or metropolitan-area network (metro) Ethernet-access applications. Cisco Systems introduces the new Cisco 2-Port 1000BASE-X/1000BASE-T Gigabit Ethernet Shared Port Adapter (SPA) module for the Cisco 7304 Router to meet customers' needs for Gigabit Ethernet applications. This SPA is a single-width, half-height module capable of supporting two fibers Small Form-Factor Pluggable (SFP) or copper RJ-45 connections. Two half-height SPAs fit into one carrier card in a single line-card slot of the Cisco 7304 chassis, greatly extending port density and modularity.