ADVISORY: HP LeftHand P4000 10G BASE-CX4 Upgrade Kit 10 Gb Ethernet board cannot be installed in the half height slot of a HP LeftHand P4300 or P4500 Storage System and results in patch failed error.
This customer advisory explains the issue and how to address it (basically install the 10GB card into the full height PCI-Express slot).
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01909238&lang=en&cc=us&taskId=101&prodSeriesId=3936136&prodTypeId=12169