OK, this is answered....  For anyone else getting this issue....You cannot upgrade a R410 Cabled Chassis to house a Hotswap SAS Backplane.  For some reason Dell made the chassis slightly different instead of making it the same design! en.community.dell.com/.../19595286
Hello all, We have 2 R410 (Gen 1 & 2).  I have just gone to move a SAS Hot Swap backplane (0F678M) from one unit to another.  However, for some reason the slots that the backplane slips over are different on each one.  I thought the chassis on the gen 1 and 2 were the same and it was just a mobo update for the Xeon CPUs? Anyone seen this issue before? Here's some pictures to show you: [IMAGE]
R410 Difference in Chassis?