Need to add SFP+ to NX430

I purchased an NX430 last June and it only has two 1 gig ports. I need to add two 10 gig SFP+ ports, but I'm not sure which cards are compatible. A card with dual SFP+ and maybe dual 1 gig ethernet would be fine, but really all I'm interested in are the SFP+ ports.

I know my system has this: