I hope you have seen
http://www.cisco.com/c/en/us/products/collateral/servers-unified-computing/ucs-b230-m2-blade-server/eol_c51-709132.html
Cisco announces the end-of-sale and end-of life dates for the Select Cisco UCS B230 M2 Distribution Bundles. The last day to order the affected product(s) is September 8, 2012.
If you take Interop tool http://www.cisco.com/web/techdoc/ucs/interoperability/matrix/matrix.html
and check for 2.2.6 and e.g. ESXi V6 U1, then the only supported adaptor is VIC-1280 !
Walter.