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Lan Driver For Acer Extensa 5620z


After upgrading my acer extensa 5620z computer system from windows xp to windows 7 my device manager is not showing up on network adapters my lan driver from broadcom. In network and sharing center it is the same - there isn't anymore ethernet connection adapter available. It shows up only my broadcom 802. 11g wireless adapter but nothing more. Now i can't use internet through network cable if i plug it in to my computer ethernet slot. On acer.com homepage i wasn't able to find lan driver for windows 7 os. Can someone please help me?

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