The range of Cisco 10GBASE XENPAK modules offers customers a wide variety of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closet, & service provider transport applications. Cisco 10GBASE XENPAK modules provide flexibility of interface choice & support 10GBASE Ethernet. These hot-swappable input/output devices plug into an Ethernet XENPAK port of a Cisco switch or router to link the port with the network & support the Cisco quality identification (ID) feature that enables a Cisco switch or router to identify whether the module is a Cisco certified & tested XENPAK module. Cisco 10GBASE XENPAK modules also support pay-as-you-populate model.