Question: what is a usb 1?
Answer: Differences between USB 1.0, 2.0 and 3.0 USB 1.0 and 1.1 ports and cables are color-coded white. USB 1.1 is still the most common type of USB being used today, despite it being the most dated form of USB and is the slowest in data transfer speed. ... USB 2.0 ports and cables are color-coded black.