USB uses the internal processor to handle everything. Speed and detail is all put on the processor. This is like when you are moving music files onto an eternal HDD, on an older computer it will be so slow, put on a new computer, the speed is much faster.
Then factor in all the new technology of a new computer, plus better CPU/RAM/HDD and updated software.
USB is a horrible transport for just about anything, but it has become the standard. https://www.howtogeek.com/53587/usb-explained-all-the-different-types-and-what-theyre-used-for/