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The maximum cable length for USB 2.0 is 5 meters. This specification is important because it ensures reliable data communication and power delivery between devices. Beyond this length, the signal quality degrades, which can lead to errors in data transmission and connectivity issues.

USB 2.0 was designed to be a versatile interface that supports a variety of devices, but the limitation on cable length is a technical consideration to maintain performance integrity. Factors such as cable quality, design, and the presence of external electrical interference can also affect the effective range of USB connections, but the 5-meter standard provides a general guideline that is widely accepted for extending USB connections without compromising functionality.