Tested and working. These are known working pulls from a professional environment. Only the two modules pictured are included.The Genuine Cisco ONS-XC-10G-S1 XFP Transceiver Module is a pair of high-quality networking units designed for use with Cisco networking equipment. Made in Thailand, these units are authentic Cisco products, ensuring reliable performance and compatibility with your system. With a form factor of XFP and a model number of ONS-XC-10G-S1, these transceiver modules provide fast and efficient data transfer capabilities for your networking needs. This product is a genuine Cisco solution, offering a secure and seamless integration with your existing networking setup.