USB technology has been around for nearly twenty years and evolving since its inception. For the most part, the technology has been able to handle almost anything that has been plugged into it. From speakers to game controllers, the only issue seemed to be that there was simply not enough ports; yet even that issue has been solved. However, new technologies like VR have exposed new problems with regard to USB technology.
The VR technology relies heavily on different external sensors that all transmit their data using USB. Each one of those sensors feeds a significant amount of data back to the computer. As more sensors are added to the set up, the amount of data continues to add up. Each time coming closer to the limits and making it harder for the computer to handle. The controller chip on the motherboard has a capacity of 400MB/s that, once exceeded, with not work properly.
Some might think that if they run into this issue, they just need to add some USB hubs and it will work perfectly again. Unfortunately, this is not the case. What Oculus has actually recommended, for individuals who want to increase the mobility of their VR setup by using more than two sensors, is to use only one USB 2.0 port in addition to two USB 3.0 connections.
Oculus also has an incredibly helpful blog which people can visit to get advice and recommendations on their VR setup. It features sections on almost any issue you can possibly run into, and, in general, it can provide you with a basic idea of what it takes to have the best arrangement to maximize your VR experience. One would not want to spend all that time and effort into preparing for a completely new experience only to find out that they do not have the minimum requirements to handle the new technology.