Which USB version introduced the concept of a smaller form factor while increasing speed?

USB 3.0 introduced a smaller form factor known as USB Micro-B connectors alongside significant improvements in data transfer speeds. Prior USB versions primarily focused on standard A and B connectors, which did not cater to the growing demand for compact and mobile devices. With USB 3.0, not only was the maximum data rate increased to up to 5 Gbps, but the physical connectors also adapted to support smaller devices, making it particularly advantageous for smartphones, tablets, and ultrabooks.

This upgrade represented a major shift in design and functionality, aligning with industry trends that prioritize portability without compromising on performance. The introduction of features such as higher power delivery capabilities alongside the compact form allowed manufacturers to create thinner and lighter devices while ensuring fast data transfers.

In comparison, earlier versions like USB 1.1 and USB 2.0 did not have the emphasis on smaller form factors combined with such high speed. Although USB 2.0 did improve speeds over USB 1.1, it did not introduce new, smaller connector types aimed at enhancing mobile device design to the same extent as USB 3.0 did. Similarly, USB 3.1 GEN 1 retained the same capabilities as USB 3.0 while adding enhancements but did