10Gb NIC daughterboard for the RR4312

Hi there!

I recently acquired a RR3312 array, and would like to get the daughterboard  for the 10Gb NIC that the 4312 series uses.  I have scoured the docs, and a part number isn't listed.  I'm hoping that someone has a 4312 and can get me a couple of photo's or part numbers to search on. 


Thanks!