This Ethernet Switch by Ciena, model NTK539PCE5, is the perfect addition to any networking setup. With reliable performance and high-speed connectivity, it is sure to meet all your networking needs. The switch is designed to handle heavy usage and has been tested to ensure top-notch quality. This switch is ideal for use in businesses or homes that require fast and reliable internet connectivity. It has been designed to work seamlessly with other networking devices, making it easy to set up and use. The Ciena NTK539PCE5 is a must-have for anyone who values high-quality networking equipment.