Ocean Technology via Amazon offers the Unitek USB 3.0 4-Port Hub for $15.99. Coupon code "KTTX4YMD" cuts it to $6.40. Plus, Prime members receive free shipping. That's $2 under our mention from three weeks ago and the lowest price we could find now by $14. It features three USB 3.0 ports plus one smart charging port, data transfer rates up to 5Gb/s, an aluminum housing, and additional 5-volt 2-amp power adapter for charging high-powered USB devices.