A look under the hood of the Universal Serial Bus
USB Ports, Cables, Types and Connectors
No one in their right mind could deny that the advent of USB was a bad thing. Before we got the now iconic USB port, the world was filled with clunky, disparate connection standards.
The typical PC of the early 90's had LPT, Serial, PS2, SCSI and MIDI ports. Just to name a few! Now we have the Universal Serial Bus, but it's not as "universal" as you might hope!
It is important to understand that even though two USB ports and cables may look identical, that does not mean they have the same capabilities. This is because USB standards have improved over the years. The hardware that sends and receives information is faster and the internal wiring is significantly different.