Hello The cable you have (X394K) is not designed for a T310. The T310 cable with the correct connector is Y690K. Thanks
I am upgrading a PowerEdge T310 for a customer that was originally shipped w/ a single HDD and no RAID controller (single drive is connected to mobo). I have purchased a PERC H700 controller and the X394K cable and hooked everything up.  There does not seem to be anything to connect the drives to the power supply, except for a 12-pin connector labeld "P3A".  But, the server does not have a connector anywhere I can connect that to.  The only thing available is an 8-pin connector from the power supply.  Is there an adapter cable to go from the 8-pin to the 12-pin? Or do I need something other than the X394K cable, which provides the SATA data connector and the power in a single molded unit? Please advise. Thank you!
PERC H700 Adapter w/ X394K Cable