Emergency shutdown: Press and hold the Power button for four seconds to force main power off and enter standby power mode.

When main power is off, the Power/OK LED on the front panel will begin flashing, indicating that the server is in standby power mode.

Caution – To completely power off the server, you must disconnect the AC power cords from the back panel of the server.

18 Sun Fire X4100/X4100 M2 and X4200/X4200 M2 Servers Installation Guide • May 2007

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Sun Microsystems X4200 M2, X4100 M2 manual