The SONT 400G OSFP SR4(EM185-FD1C) optical transceiver is a Hot-Pluggable, Multi-Mode fiber for 400G short range of datacom interconnection. Using VCSEL devices for 4 lanes, each electrical lane is converted into an optical lane at 106.25Gbps, giving an aggregated data rate of 425Gbps. It allows communication up to 60m using OM3 fiber or 100m using OM4 fiber with FEC of SR4. 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.