This is Dell cable P/N TR5TP. This cable is used in the PowerEdge R740 R740XD servers as well as Precision T7920 workstations to provide additional power to GPUs that require additional 6-pin and 6/8-pin PCIe power. This is a 8-pin to 6+6/8-pin connector that plugs into the motherboard or riser. This has PCIe power 6-pin and 8-pin arrangement that works with normal GPU cards. It does NOT work with GPGPU cards like Tesla Referral that require EPS-12V arrangement. If your GPGPU requires EPS-12V 8-pin power, look at my other listing for Dell P/N 4VPD3.