Hello. You will need Mini SAS cable of part number: J7KJW.  The cable  P/N:  606JD is not compatible with T320/T420
Hello, I am trying to install an LTO4 SAS Tape Drive into a Dell PowerEdge T320 tower server.  I have the Tape Drive and the H310 SAS Controller/HBA for connecting to the drive but I can't find the correct cable to go from the Drive to the H310.# I was going to use P/N:  606JD which is listed at the TBU Cable for T610/T710 but not sure if that is the correct cable for this unit. Any assistance would be massively appreciated.  Thank you 
Dell PowerEdge T320/T420 Internal SAS Tape Drive