The Cisco QDD-400G-DR4-S is a state-of-the-art 400GBASE-DR4 QSFPDD optical transceiver designed for high-speed data transmission over single-mode fiber (SMF). Operating at a wavelength of 1310nm and utilizing PAM4 modulation, it delivers a transmission reach of up to 500 meters. This versatile transceiver supports 4x 100G-DR configurations, making it ideal for various networking applications, particularly in data centers. It features MPO-12/APC connectors, ensuring reliable and efficient connectivity. Additionally, the QDD-400G-DR4-S incorporates Digital Optical Monitoring (DOM) for real-time performance diagnostics, providing scalable connectivity solutions that enhance network efficiency and support high-bandwidth applications in modern infrastructures.
