This is a HP 444477-B27 compatible 10GBase-CX CX4 to CX4 direct attach cable that operates over passive copper with a maximum reach of 15.0m (49.2ft). It has been programmed, uniquely serialized, and data-traffic and application tested to ensure it is 100% compliant and functional. Our direct attach cables are built to comply with MSA (Multi-Source Agreement) standards. The actual part shipped may have a different part number, but will be functionally identical and 100% compatible. All of the twinax and AOC cables are Trade Agreements Act (TAA) compliant.