Asus UX31E - Manual (Page 60)

60 Notebook PC User Manual
Instant On
Zero-wait system restarting gets you immediately back to work and
play with saved system status. After activating it, the SHUT DOWN
button in the Start Menu will be changed to SLEEP so you could
enjoy fast resume to your last working state.
During WINDOWS UPDATE, the “Instant On” feature will be
automatically disabled so the SHUT DOWN button in the Start
Menu will not be changed to the SLEEP function before all
updates are completed. When Instant On function is enabled,
“Wake on USB/LAN“ function will be disabled.