Yes, an e5506 will work fine:[URL]  
I have a PowerEdge T410 with a Xeon e5502 two core processor.  I would like to upgrade it to the e5506 processor with four cores.  I have one available and am wondering if the motherboard will handle swapping it out.  I may also add a second one if this will work.  Thanks.
Upgrade PowerEdge T410 CPU