Yes, you could also go this way, and theoretically, it should work with the cables that are already installed. So you do not need to purchase additional ones. If you find one H710 mini, go fo it.   CheersStefan  
Hello, Looking to upgrade my 720 which is the 8x3.5 I believe. I am not sure what all is needed besides the RAID card. Can anyone confirm if I will need any cables for this as well? The service tag is . Any help is appreciated. 
720 diskless to RAID