kIOUSBHostConnectionSpeedHigh The connected device runs at 480 megabits per second. DeclarationkIOUSBHostConnectionSpeedHigh See AlsoGetting the Connection SpeedskIOUSBHostConnectionSpeedNonekIOUSBHostConnectionSpeedFullkIOUSBHostConnectionSpeedLowkIOUSBHostConnectionSpeedSuperkIOUSBHostConnectionSpeedSuperPluskIOUSBHostConnectionSpeedSuperPlusBy2kIOUSBHostConnectionSpeedCount