I have super server SC933T-R760 / SC933T-R760B with the backplane CSE-SATA-933. Can I replace this backplane with the one has the expander chip build in?
Yes, you can! The Backplane CSE-SATA-933 can replace by BPN-SAS-933EL1 or BPN-SAS-933EL2.
For your reference, the link is attached below.
1> http://www.supermicro.com/products/chassis/3U/933/SC933E1-R760.cfm
2> http://www.supermicro.com/products/chassis/3U/933/SC933E2-R760.cfm