The WIS12ABGNX is apparently also work with your device. You can find all the parts and accessories to your product here: http://www.samsungparts.com/Products/Parts_and_Accessories/UN40D6000SF/Default.aspx
My manual says i need a wis09abgn or a wis09abgn2 or a wis10abgn. to connect wirelessly to the internet. all i seem to see at a reasonable price is the wis12abgn for sale. since this is a newer adaptor the wis12abgn will it work for my tv that is a samsung un40d600sf. any info i can get will be greatly appreciated.