The product is a lot of (5) Avago AFBR-57D9AMZ-ELX 8GB FC SFP+ 850NM SR Transceiver Modules. These modules are designed for high-speed data transfer and are specifically engineered for use in enterprise networking and server applications. With the brand being Avago, known for its quality and reliability in the industry, these transceivers are suitable for demanding environments requiring fast and efficient communication.