USB 허브 3.0-to-2.0 허브 USB 3 턴 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc Oc