The Cisco Coarse Wavelength-Division Multiplexing (CWDM) Gigabit Interface Converter (GBIC) Solution allows enterprise companies and service providers to provide scalable and easy-to-deploy Gigabit Ethernet services in their networks. The product set enables the flexible design of highly available multiservice networks. The Cisco CWDM GBIC Solution offers a convenient and cost-effective solution for the adoption of Gigabit Ethernet in campus, data center, and metropolitan-area access networks.This set contains 4 pairs (2x Violet, Green, Orange, Brown) of CWDM GBICs.