MPO 400G QSFP cable is a type of optical fiber cable that supports 400 Gigabit Ethernet (GbE) transmission over multimode fiber (MMF). It consists of a QSFP-DD (Quad Small Form-factor Pluggable Double Density) transceiver module at each end and a MPO (Multi-fiber Push On) connector that connects up to 16 fibers in a single cable.

MPO 400G QSFP cable is designed to meet the increasing demand for high-speed data center connectivity, especially for applications such as cloud computing, artificial intelligence, big data analytics, and high-performance computing. It offers several advantages over traditional copper cables, such as:

• Higher bandwidth: MPO 400G QSFP cable can deliver up to 400 Gbps of data per cable, which is four times faster than the previous generation of 100G QSFP28 cable.
• Longer reach: MPO 400G QSFP cable can support distances up to 100 meters over OM4 MMF, which is twice as far as 100G QSFP28 cable over the same fiber type.
• Lower power consumption: MPO 400G QSFP cable consumes less power than copper cables, which reduces the cooling and operational costs of data centers.
• Easier installation and management: MPO 400G QSFP cable has a smaller footprint and lighter weight than copper cables, which simplifies the cabling infrastructure and improves the airflow in data centers. Moreover, MPO 400G QSFP cable has a plug-and-play design that eliminates the need for splicing or termination.

Some technical details of MPO 400G QSFP cable are:

• The QSFP-DD transceiver module has a form factor of 18.35 mm x 92.15 mm x 8.5 mm and supports eight lanes of 50 Gbps each using PAM4 (Pulse Amplitude Modulation) modulation.
• The MPO connector has a ferrule diameter of 6.4 mm and can accommodate up to 16 fibers in a single row or up to 32 fibers in two rows. The most common fiber types used for MPO 400G QSFP cable are OM3 and OM4 MMF, which have a core diameter of 50 microns and a cladding diameter of 125 microns.
• The MPO 400G QSFP cable has a minimum bend radius of 30 mm and a maximum tensile load of 100 N.

MPO 400G QSFP cable is a high-speed solution for data center connectivity that offers higher bandwidth, longer reach, lower power consumption, and easier installation and management than copper cables. It is compatible with the IEEE 802.3bs standard for 400 GbE and the MSA (Multi-Source Agreement) specification for QSFP-DD transceivers. It is also backward compatible with lower-speed QSFP transceivers and cables using breakout adapters or hybrid cables.