The Ciena NTK553HA 006 100GHz C-Band 4x1 Wavelength Selective Switch WOWUA50EAA is a high-quality switch module designed for enterprise networking and server applications. With its single module design and SFP network ports, this unit offers reliable and efficient performance for routing data in a C-Band wavelength. The Ciena brand ensures a trusted and dependable product in the world of networking technology. This switch module is a valuable addition to any networking setup needing precise wavelength selective functionality.