The Sterling 100Gb QSFP28 to 4 x 25G SFP28 active optical cable is designed for use in 100GbE Ethernet systems. It is compliant with SFF-8402 for the SFP28 ends and with SFF-8665 for the QSFP28 end. The QSFP28 cables connect data signals from each of the 4 MMF (Multi-Mode Fiber) pairs on the QSFP28 end to the single pair of each on the SFP28 ends. Each QSFP and SFP port comprises an EEPROM providing product and status monitoring information which can be read by the host system.