The Cisco ASR 9000 Series modular line cards provide customers with a flexible solution supporting multiple combinations of Ethernet ports,all in a single slot of the Cisco ASR 9000 Series Aggregation Services Routers. Modular line cards support a wide range of interfaces and densities offering the benefits of network scalability with lower initial costs and ease of upgrades. The Cisco ASR 9000 modular line cards and modular port adapter portfolio continues the Cisco focus on investment protection along with consistent feature support,broad interface availability,and the latest technology.