![](/images/new-backgrounds/1179983/179983149x1.webp)
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| Table | |
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Switch | Signal | Settings | Function |
SW1 | RESERVED | Off (factory setting) | Reserved for future use. |
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| On |
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SW2 | RSTMASK | Off (factory setting) | Reset pushbutton switch on front of system is |
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| enabled. |
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| On | Reset pushbutton switch on front of system is |
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| disabled. |
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SW3 | ACLINK | Off (factory setting) | Sets server for use with a local power source. |
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| On | Sets server for use with an optional |
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| uninterruptible power supply (UPS) unit and |
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| disables the Power button on the front of the |
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| server. |
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SW4 | RESERVED | Off (factory setting) | Reserved for future use. |
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| On |
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4.Set the appropriate switch on or off, according to Table
Note: If you set SW2 to On for use with an optional UPS unit, power the unit up before switching power on the server.
5.Press the main Power switch on.
■If using an UPS unit, the server powers up as soon as the UPS unit is turned on (the Power button on the front of the server is disabled.)
■If not using the UPS unit, press the Power button on the front of the server.
Configuring Processor Board Jumper
This section describes how to configure and set the processor board jumper for the number of CPUs on the board. Figure
Configuring Your System