Trying to enable sli

I am trying to enable SLI with 2 EVGA superclocked GTX 560TI on a Gigabyte GA-Z68X-UD3H-B3 motherboard i have everything coneected use the sli bridge that came with the motherboard Nvidia controal panel wont let enable SLI the option is there but says i need connect a sli bridge which is connected
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More about trying enable
  1. Try removing both cards, and re-installing them both, to ensure they are both correctly seated.

    Also be sure to update your GPU drivers HERE: http://www.geforce.com/Drivers

    Check to see if there is a update for your motherboard's BIOS HERE: http://www.gigabyte.com/products/product-page.aspx?pid=3853#bios

    Check that both GPU's have sufficient power, and both 6-pin power cables are properly connected (for both cards)

    Are you using the correct lanes for SLI?

    Hope this helps.
  2. my mainboard only has two lanes
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