QSFP-DD is a new module and cage/connector system similar to current QSFP, but with an additional row of contacts providing for an eight lane electrical interface. It is being developed by the QSFP-DD MSA as a key part of the industry's effort to enable high-speed solutions. The latest addition to the Cisco portfolio pushes this boundary further with the introduction of the 400G QSFP-DD High-Power (Bright) Optical Module. Cisco is now expanding the range of 400G Digital Coherent QSFP-DD transceivers, introducing High Tx Power variants (+1dBm of Tx. QSFP-DD offers top-of-the-line bandwidth density and the flexibility of backwards compatibility with lower-speed QSFP pluggable modules and cables, making it one of the most popular choices for high-speed data centers and networks. The Cisco ® QSFP-DD Open Line System (QSFP-DD OLS) is a pluggable optical amplifier module that, together with the channel breakout options (described later), provides a simple yet powerful open. These transceivers are compliant with the QSFP-DD MSA, and portions of IEEE P802. Digital diagnostic functions are available via the I2C interface specified in Common Management Interface Specification Rev. 0 and Finisar Application Note AN-2189. The transceiver is RoHS-6 compliant per. Describes the chassis, power supply, fans, boards, optical modules, and power distribution box of the NetEngine 8000 M14K, M14, M8K, M8, M4, 8000E M14, M8.
