According to this page https://www.dell.com/support/manuals/en-mk/poweredge-r750/per750_ism_pub/system-board-jumpers-and-connectors?guid=guid-f1535fb9-217b-498a-86eb-cb07394c704e&lang=en-us the R750 has only 12 pin connectors for GPU power, the previous R740 has 8 pin GPU power connectors for each riser. How can we connect our FPGA card (using 6/8 pin GPU power cable from R740) in R750?