The Cisco compatible QSFP28 to SFP28 adapter converter module provides 25G Ethernet connectivity for QSFP28 100G ports. This module is compliant with QSFP28 MSA SFF-8665 and SFP28 MSA SFF-8432. The built-in MCU enables I2C reading of SFP28 registers by reading QSA registers. The high-speed data channel of the SFP28 receptacle is connected to lane 1 of the QSFP28 connector. The other three channels on the QSFP28 connector are not connected.
Note 1: A CVR without registers will display the system's built-in module information, whereas a CVR with registers may not.
