2010 Hyundai Sonata Owner's Manual - Page 150
2010 Hyundai Sonata Manual
Page 150 highlights
FEATURES OF YOUR HYUNDAI 1 137 o Do not use the USB device for other purposes than playing music files. o Use of USB accessories such as a recharger or heater using the USB I/ F may lower the performance or cause trouble. o If you use devices such as a USB hub you purchased separately, the vehicle's audio system may not recognize the USB device. Connect the USB device directly to the multimedia terminal of the vehicle.