The SONT 400G QSFP-DD SR8(DH185-FD1C) optical transceiver is a Hot-Pluggable, Multi-Mode fiber for 400G short range of datacom interconnection. Using VCSEL devices for 8 lanes, each electrical lane convert into optical lanes at 53.125Gbps giving an aggregated data rate of 425Gbps .It allows communication up to 70m using OM3 fiber or 100m using OM4 fiber with FEC. Compliant with the Common Management Interface Specification and MSA. This module incorporates proven circuit and VCSEL technology to provide reliable long life, high performance, and consistent service.