This Dell Networking cable 2x100GbE QSFP28-DD to 8xSFP28 10/25GbE DAC passive breakout cable is used to link your fiber networking devices for high-speed, long-distance connectivity. This cable features a 2X100GbE QSFP28-DD connector at one end and 8xSFP28 10/25GbE DAC connector at the other end.