TP-Link - Wireless-N USB 2.0 Adapter
Model: TLWN821N
http://www.bestbuy.com/site/TP-Link+-+Wireless-N+USB+2.0+Adapter/1305155778.p?id=mp1305155778&skuId=1305155778&st=%20TP-Link%20-%20Wireless-N%20USB%202.0%20Adapter%20&cp=1&lp=1
Not sure if it 糾錯能力強. That said, it seems to have very good wifi signal on my old pc.