Hello Moty GROSSMAN,   I will look into this for you. Could you provide some more information please:     Do you have H730P PERC Adapter or  H730P PERC mini?   What is the backplane size of drives? 2.5" or 3.5"      and how many drives?  
Looking for the correct part number
H730P cable to install in R740XD 12LFF/4SFF