What does the 2.0 protocol of the USB interface refer to?

The USB 2.0 interface standard was jointly formulated by seven companies: COMPAQ, Hewlett Packard, Intel, Lucent, Microsoft, NEC and PHILIPS. Compared to the USB 1.1 standard, USB 2.0 has increased the data transmission speed between devices to 480 Mbps, which is nearly 40 times that of USB 1.1. This speed increase undoubtedly brings users a more efficient usage experience, allowing them to make full use of external devices.

It is worth noting that USB 2.0 not only improves the transmission speed but also maintains the compatibility of various speed peripheral devices. This means that regardless of the speed of your device, you can easily connect to the USB 2.0 line without worrying about the bottleneck effect of data transmission. Moreover, USB 2.0 retains the cable specifications and connector specifications of the original USB interface, making the upgrade process more convenient.

While achieving high-speed transmission, USB 2.0 still maintains the excellent characteristics of USB 1.1, such as plug-and-play and hot plugging. This means that users can easily connect and use external devices without complex settings. At the same time, USB 2.0 also guarantees backward compatibility, allowing older USB devices to work normally on USB 2.0 interfaces.

In summary, the launch of the USB 2.0 interface standard has brought users a more efficient and convenient usage experience. Whether it is the improvement of transmission speed or the compatibility of various speed peripheral devices, USB 2.0 has become the mainstream choice for computer external interfaces at present.