USB2.0 does a "round-robin" query on its single channel to ensure a consistent, sustainable output of 12Mbps for every USB2.0 compliant device. If a USB1.1 type is detected, the 12Mbps will be stepped down to 1.5Mbps. It's doesn't matter if there are 8 or 1 device, the speed is still 12Mbps for USB2.0 and 1.5Mbps for USB1.1
Challenge: The ESA office in Brussels wanted a reliable audio conference system for video conferences. Their requirement - No participant must be left out from the conference and the audio quality must not be compromised.