The HP 683867-001 graphics card power cable connects a workstation power lead to a graphics card that uses a different auxiliary power connector. It is specified as a 6-pin to 8-pin cable, providing the corresponding connection conversion for a compatible setup.
The distributor lists it for HP Z420, Z440, Z640, Z820 and Z840 workstations. Its role is straightforward: link the workstation’s power connection with the graphics card’s 8-pin input. The part number identifies this particular cable, helping distinguish it from other graphics card power leads.