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Sharkk USB 3.0 Gigabit Ethernet Adapter for $10 + free shipping w/ Prime
Sharkk via Amazon offers Prime members the Sharkk USB 3.0 to RJ45 Gigabit Ethernet Adapter for $9.99 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $8.22.) That's the lowest total price we could find for a comparable adapter elsewhere by $6.
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