This is a Dell compatible 40GBase-AOC QSFP Plus to QSFP plus direct attach cable that operates over active fiber with a maximum reach of 15.0 m. It has been programmed, uniquely serialized, and data-traffic and application tested to ensure it is 100 percent compliant and functional. Our direct attach cables are built to comply with MSA (Multi-Source Agreement) standards. Features Media - Fiber Speed - 40GBase Transceiver Type - AOC Wavelength - 850nm