The Cisco CPAK™ 100GBASE modules offer customers a wide variety of high-density 100Gbps connectivity solutions for data center networking, high-performance computing networks, enterprise core aggregation, and service provider transport applications. Some CPAK modules, such as the Cisco CPAK 100GBASE-LR4, use Cisco® complementary metal-oxide semiconductor (CMOS) photonic technology to provide industry-leading optical integration, performance, low power consumption, and scalability.