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Dell Unity™ All Flash and Unity Hybrid Unity 480/F, Unity 680/F, Unity 880/F Hardware Information Guide

Nonmaskable interrupt (NMI) button

The nonmaskable interrupt (NMI) button is a recessed button located on the embedded module, which is used to reset the system password or force a system reboot.

Use a non-metallic object such as a toothpick or pen to press the recessed button. Press the button for approximately 2 seconds to reset the password. The SP assembly fault LED blinks blue when the password has been successfully reset.

Press the button for 10 or more seconds to force a system reboot.

Figure 1. Location of the NMI button on the embedded module
NMI button on embedded module

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