The SP Source Photonics OSFP 2x400G FR4 3km IEEE 802.3 Optical Transceiver is a high-quality networking device designed for use in enterprise networking and server applications. Made by the reputable brand Source Photonics, this optical transceiver is manufactured in China and is specifically designed for use with fiber optic cables up to 3 kilometers in length. With a high bandwidth capacity of 800Gbps, this transceiver is ideal for handling large amounts of data quickly and efficiently in a professional networking environment.