Thanks to all for your comments and tips, finally I do add the new DAE4P to exist running CX4-960 and its successfull.  1. Racked with same exist CX4-960 palced. 2. Connect the power code 3. Set up the BUS & Enclosure ID 4. Plugged the data cable, fist to LCC B then A 5. Run Navispare 6. Configure the rests.  *I didn't use USM.
Dears,  I'm planning to install (adding) new DAE4P into exist running CX4-960. I have below questions  1. Need your input on what pre-checks need to be completed? 2. After mounting DAE's on to CX4-960 will it automatically pick up Enclosure ID's or need to set it manually? what would be the best practise for doing this? 3. Any other considerations? and what are others steps have to follow?    Thanks, M10vir
Installing (Adding) new DAE4P to CX4-960