fiber network cards and gigabit tehnology

have you tested any fiber network cards untill now with MicroTik?
would it be possible to extend the use of gigabit copper network cards to SMC EZ series?

i tried intel fiber gig cards…

they work fine

What is the Model number of the card you tested?

Thanks

the ones i think work best are these cards

NetXtreme BCM5704S Gigabit Ethernet (rev: 2)