Hello You don't need to change any of the cabling. The A1 and B1 connectors are not used. There is an expander built into the backplane that gives a single controller access to all 16 slots. Thanks
Hello, I'm looking to upgrade a server's storage.  We currently use the first 6 slots of a 2 row hot swap cage in a T420.  According to OpenManage all 6 drives are on connector 0.  I would like to add several drives in the second row to be used in a new VM. However when I look into the backplane I see 4 drive connectors.  The 2 cables coming from the PERC reside in ports A & B while A1 and B1 are not in use. So my questions are, do I need to move a cable to make this happen or should I be already good to go?  Why is there 4 ports on the backplane?  Is there a spec sheet that will show how to cabling should be? It's a production server and I'm just working on an upgrade proposal so I can't take it off line at this time. Thanks!
PERC H710 and 16 x 2.5" tower backplane (018G5) connection