Thank you chino.  Yes DP/N 19WMR is one of the Dell 360w psu. Dell Optiplex 360W PSU Power Supply L360EPS-00 19WMR 019WMR it has 6+4+4 connector for 7090 motherboard and 6+2 PCIe connector for graphics card.  [URL]
so i dont know if this cable is pci cable or something can u help? specs: optiplex 7090 tower            cpu i7 10700            gpu rx 550 (no profile dell editon)            ram 16 single stick [IMAGE][IMAGE]
what is this cable for