What is the maximum cable length for USB 3.0 using a non-twisted pair wire?

The maximum cable length for USB 3.0 when using non-twisted pair wire is indeed 3 meters. This standard specifies that while USB 3.0 cables can generally transmit data at high speeds up to 5 Gbps, the length of the cable can significantly affect signal integrity and data transfer performance.

For non-twisted pair cables, which typically do not have the added benefit of minimizing electromagnetic interference like twisted pair cables do, the allowable length is limited to ensure that the data signal remains strong enough to avoid errors during transmission. It is important to adhere to this maximum length to maintain reliable communication between devices. As a result, using a 3-meter cable is the ideal choice for maintaining the quality of data transmission in USB 3.0 connections without degradation in speed or performance.

Longer cables might lead to signal loss and performance issues, which is why USB specifications enforce such limitations on cable lengths.