DeWalt Comprehensive Guide to Dell NMI Button and Power Management Features

Dell

Figure 6. PowerEdge R510–12 HDD Configuration

4.3.1NMI Button

The Non-Maskable Interrupt (NMI) button can be accessed through a pin hole with a thin object (e.g., the end of a paperclip). Pressing this button results in a Non-Maskable Interrupt to the CPU, which halts all CPU operations.

4.3.2System ID Button

There are 2 System ID buttons—one on the front panel of all servers and one on the back panel of rack-dense and rackable tower servers. When the System ID buttons are pressed, the System Status/ID LED in the front and in the back blink, identifying the particular server in a rack full of servers. This button remains functional during non-operational (that is, standby and shutdown) modes.

4.3.3Power Button/Power LED

The power button controls the system's power, turning the unit on and off. All PowerEdge servers have the power LED light-pipe integrated in the power button. The LED is a green standard Power icon.

Figure 7. Power Button/LED Implementation

PowerEdge R510 Technical Guide 21