USB 3.1: what it is, how it works and what it does

USB 3.1 is a version of the Universal Serial Bus (USB) standard, a device interconnection protocol that has evolved through several generations. According to available technical documentation, documented versions of the standard include USB 1.0 (1996), USB 2.0 (2000), USB 3.0 (2008), and USB 3.1, among others.

Position in the evolutionary line

The USB standard is characterised by a progressive increase in data transfer rate with each successive version. USB 3.1 is positioned as an iteration following USB 3.0, maintaining the principle of improved transfer performance over the previous generation.

Identification in devices

The presence of USB 3.1 is identified in the USB ports of computers and peripherals. In device specification sheets, the field usb_version takes the value 3.1 to indicate that the port or interface complies with that version of the standard.

Scope and limitations of available information

The consulted evidence confirms the existence of USB 3.1 as a version of the standard and its association with USB ports in devices, but does not detail specific parameters such as the nominal transfer speed, the associated connector type, or the internal protocol architecture for this version. For those aspects, the official USB-IF consortium documentation is required.

Interpretation in a product

When a product declares usb_version = 3.1, it indicates that at least one of its USB ports operates in accordance with the USB 3.1 specification. This implies, by the general principle of the standard, a data transfer capacity superior to that of USB 3.0, although the concrete speed and additional features depend on the manufacturer's implementation.

With each successive version of the USB standard, the data transfer rate is increased.

Aliases and designations

• USB 3.1
• Universal Serial Bus 3.1
• USB version 3.1