Cisco SFP28 to SFP28 Active Optical Cables are direct-attach fiber assemblies with SFP connectors. They are suitable for very short distances and offer a cost-effective way to connect within racks and across adjacent racks. 5M to 100M, beyond the range of Direct Attach Copper Cables (DAC). They are compliant with SFP28 MSA, SFF-8431 and SFF-8432, it is mainly used in 25G data center internal network, wireless, metropolitan area network and other environments. This AOC is compliant with the SFP28 MSA IEEE 802.