Bert,
The swappable hard drives are 90.00 dollars.
The PERC 6/I Cable for Hot Plug Hard Drive is pretty much what it says, I believe that the T300 is a software driven raid set up. The PERC cable is compatable with the RAID set up in this server. (Probably not technically correct), but a friend of mine went to set his dellT300 up in a Raid 5 with swappable drives and it didn't work without this cable.
