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Amazon.com: Duttek USB 3.0 Header to USB 2.0,USB 3.0 to USB 2.0 Motherboard Adapter Cable,19 Pin USB3.0 Male to 9 Pin USB2.0 Female Motherboard Cable Adapter Converter 6 inch/15cm (2-Pack) : Electronics
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Why can't USB 2.0 ports be upgraded to 3.0 via software update? Also, why do some computers have both? - Quora
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