In USB 3.0, dual-bus architecture is used to allow both USB 2.0 (Full Speed, Low Speed, or High Speed) and USB 3.0 (SuperSpeed) operations to take place simultaneously, thus providing backward compatibility.
Tänu kaksiksiini arhitektuuri kasutamisele, saavad USB 2.0 (High Speed, Low Speed, Full Speed) ja USB 3.0 (SuperSpeed) operatsioonid toimida samaaegselt, luues seetõttu tagasiühilduvuse.