Apple Xserve (Cluster Node) - Manual (Page 9)

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Power socket
The power cord connects here; it is held in place by a special clip so that it stays connected
when the server is opened in the rack.
G Gigabit Ethernet port
Connect your server to a high-speed Ethernet network. Ethernet ports adjust automatically
to the transmission speed supported by network components. The Ethernet port is built
in.
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 front
panel.
PCI card slots
You can install two 12-inch PCI cards in the server to connect peripheral devices. See
“About PCI Cards for the Server” in Chapter 5 of the
Xserve User’s Guide for details. One or
two slots may come with cards installed at the factory.
FireWire 800 ports
Connect FireWire devices to the server. A FireWire 400 port is also located on the front
panel. The enclosure lock must be unlocked for the server to recognize some devices
connected to this port. (See “FireWire Specifications” in Appendix A of the
Xserve User’s
Guide for information about FireWire ports and connectors.)
USB ports
Connect USB devices, such as a keyboard or mouse. The enclosure lock must be unlocked
for the server to recognize some devices connected to this port.
Serial console port
Connect a serial device or computer with a serial port. This console supports
RS-232–compatible connections.