Ocean Technology via Amazon offers the Unitek USB 3.0 to Gigabit Ethernet Adapter for $10.29. Coupon code "HKD6JUCF" cuts it to $6.99. Plus, Prime members bag free shipping. That's $3 under our October mention and the lowest price we could find by $7. It features data transfer speeds up to 5Gb/s. Deal ends February 28.