Description The Cisco QSFP-4SFP25G-CU3M compatible 3m breakout cable provides a 100G QSFP28 to four 25G SFP28 solution for medium-reach interconnections via passive copper twinax. Utilizing high-quality twinax wiring, it supports aggregated 100Gb/s data rates with zero power consumption for data center reliability. This cable is an ideal solution for interconnecting high-speed switches with distributed server nodes across the rack.