Apple M9745LL User Guide - Page 11
Ethernet link lights, System activity lights
UPC - 718908876725
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® On/standby button and light Press to turn on the server. Enclosure lock and lock status light The lock secures the enclosure and drive modules in the server. It can be locked and unlocked with the enclosure key supplied with the server. An option in the Security pane of System Preferences lets you inactivate a connected keyboard and mouse when the enclosure lock is engaged. This option is turned off by default. See "Controlling Access to a Connected Keyboard and Mouse" on page 59 for details. When the enclosure lock is locked (the light is on), the server may not recognize peripheral devices such as a keyboard, mouse, or storage device. Unlock the lock to use those devices. System identifier button and light The system identifier light turns on if a problem is detected. It also can be turned on manually by pressing the button. This indicator is useful for locating a particular unit in a rack with multiple servers. A duplicate system identifier button and light are on the back panel. FireWire 400 port Provides a FireWire 400 connection on the front of the server. There are also two FireWire 800 ports on the back panel. The enclosure lock must be unlocked for the server to recognize some devices connected to this port. (See "FireWire Specifications" on page 86 for information about FireWire ports and connectors.) G Ethernet link lights Two lights indicate whether the server is connected to an Ethernet network. Each light represents one of the two built-in Ethernet ports. System activity lights Two rows of eight lights indicate system activity. In a server with a single processor, the rows of system activity lights operate in sync; in a dual-processor server, the rows of lights operate independently to show each processor's activity. These lights also show the options in front panel mode; see "Entering Firmware Boot Commands From the System's Front Panel" on page 63 for details. Optical drive You can use the slot-load optical drive to add or reinstall software on the server. Drive modules and lights You can install up to three Serial ATA (SATA) drive modules in the server. These modules can be removed and installed while the server is running. (See "Installing or Replacing an Apple Drive Module" on page 70 for more information.) Each drive module has lights showing operating status and disk activity. Chapter 1 Xserve G5 Overview 11