Exceeding 5m for USB 2.0 Full Speed
Section 7.1.19 of the USB 2.0 Specification discusses delays. There you will find that signals in
  a cable must travel from connector to connector within 26ns (5.2ns/m max). This is why
  standard detachable cables are limited to 5 meters. 


https://www.usb.org/sites/default/files/Propagation_Delay_between_Host_Transcievers_and_Downstream_Ports.pdf