Ocean Technology LLC via Amazon offers Prime members the Unitek USB 3.0 4-Port Hub, model no. 883042, for $16.99. Coupon code "Q3GLBD63" cuts it to $12.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise shipping starts at $8.48.) That's $23 off and the lowest total price we could find. It supports transfer rates of up to 5Gbps.