Reference Guide

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 the Dell Precision Tower 3420 Small Form Factor
Model Number S0 S1 S3 S4 S5
Dell Precision Tower 3420_SFF
X X X X
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