ATOP 400G QSFP-DD FR4 is a hot-pluggable form factor transceiver designed for high speed optical networking applications delivering data rate up to 425Gb/s. This optical module offers a high performance yet cost effective solution for 400G Ethernet and data center customers. It supports link distance up to 2km in single mode fiber (SMF) with a duplex LC connector. Designed to withstand tough external operating conditions, this 400G QSFP-DD transceiver operates within the commercial temperature range, from 0℃ to 70℃.