The product is a lot of 8 FS QSFP28-SR4-100G optical transceivers, designed for high-speed 100G QSFP28 connections using 850nm wavelength technology. These transceivers are manufactured by FS, a reputable brand known for producing reliable networking components. Ideal for use in enterprise networking and server environments, these transceivers ensure efficient data transmission and reception at very high speeds. Perfect for those looking to upgrade their networking infrastructure with high-quality and durable optical transceivers.