Unable to enable RSS on 554FLB nics

[htj]

I am trying to enable RSS on a BL460c Gen8 server running Windows 2012 R2 Hyper-V according to MS recommendations.

The server, CNA's, Virtual Connect are running lastest firmware/drivers.

Virtual connect server profile for each LOM:

 - 3 Ethernet network adapters

 - 1 FCoE HBA

The first Ethernet adapter for each LOM is enabled for RRS  by default.

But I cannot enable the second and third Ethernet adapter for each LOM.

I use the Enable-NetAdapterRss PowerShell CmdLet to enable RSS and I get back error 50, which translates to "The requested operation is not supported."

http://emulex.force.com/knowledgebase/articles/How_To/RSS-and-VMQ-Tuning-on-Windows-Server

Any idea on how to enable RSS on the second and the third Ethernet adapter for each LOM?

Thanks

/Henrik