Boot from USB

With the device powered off, insert the USB drive and use the combination from the list below:

If the device is already powered on and boot looping due the eMMC being cleared then follow the instructions below whilst the device is looping but exclude any steps involving the power button.

Device	USB Boot Button Combination
ASUS VivoTab RT	Hold Vol- & Press Power Button. Release Vol- when ASUS logo appears.
Dell XPS 10	Hold Vol- & Press Power Button. Release Vol- when when Dell logo appears.
Lenovo IdeaPad Yoga 11	Hold Vol+, Hold Windows Key (On Tablet) & Press Power Button. Release Vol+ & Windows Key when Lenovo logo appears.
Microsoft Surface 2	Hold Vol- & Press Power Button. Release Vol- when Surface logo appears.
Microsoft Surface RT	Hold Vol- & Press Power Button. Release Vol- when Surface logo appears.
Nokia Lumia 2520	Hold Vol- or Vol+ & Press Power Button. Release Vol button when Nokia logo appears.
Samsung Ativ Tab	Hold Vol- & Press Power Button. Release Vol- when when Samsung logo appears.