In 2017, the IEEE-SA Standards Board approved IEEE Standard 802.3bs. This resulted in the official launch of 400 Gigabit Ethernet. In theoretical terms, it is the advancement from 100G Ethernet and can operate four times faster than 100G. Not only is this, but it also offers a denser configuration and a better economy of scale. Unlike 100G transceiver modules, the 400G transceivers come with 8 channels and utilize PAM4 encoding to accomplish 50Gbps per channel.

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