Ocean Technology via Amazon offers its Unitek USB 3.0 Serial ATA Adapter, model no. Y-1099NEW, for $21.99. Coupon code "YDBNNSSJ" drops it to $19.79. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.47.) That's $19 off list and the lowest total price we could find. It features data transfer speeds up to 5Gbps.