Robart_Defuego,
Not for the HL50A650. The WIS09ABGN is only good for the 2009 products, unfortuantely. The WIS08 stick for 2008 products is not easy to find, but there may be some available at Samsung's Parts department (800-627-436
or at Amazon or other online retailers.
--HDTech
Is there anyway to use this LinkStick with my HL50A650? I saw them at BB today and picked one up. I haven't been able to get it to work and I haven't been able to find any firmware updates for my TV that would help.
Anyone else? Any chance Samsung will update the firmware? I am very pleased with this TV and not interested in getting a new one yet. I like the idea that Samsung built in the ability to update the firmware through the wiselink but I haven't seen them use it yet, at least not for my model.

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