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Question: How to Access Wi-Fi for KDL-52Z5100

I have a KDL-52Z5100. To access internet, do I buy a Sony UWA-BR100 wireless lan adapter and plug it into the USB plug, or go with the Netgear WNCE2001 universal wi-fi adapter that is wired to the TV's LAN plug? Will both/either work - either better than the other?