Reference Guide

DELL CONFIDENTIAL Page 3
Restricted - Confidential
S5 is the “soft” off state. There is no power. The OS does not save any context to wake up the system.
No data will remain in any component on the system board, i.e. cache or memory. The system will require
a complete boot when awakened. Since S5 is the shut off state, coming out of S5 requires power on
which clears all registers.
The following table shows all the states supported by Dell Latitude™ E6420 and Dell Latitude™ E6420
ATG:
Model Number
S0
S1
S3
S4
S5
Dell Latitude™
E6420
X X X X
Dell Latitude™
E6420 ATG
X X X X