Ocean Technology via Amazon offers the Unitek USB 3.0 4-Port Portable Ultra Slim Data Hub and Wall Charger in Black for $13.99. Coupon code "RAPSXKYN" cuts it to $12.59. Plus, Prime members receive free shipping. That's $13 off and the lowest price we could find. It features data transfer rates up to 5Gb/s, built-in surge protection, micro USB power port for charging high-powered devices, and wall charger with LED indicator. Deal ends August 31.