System-management connector: Use this connector to connect the server to a network for systems-management information control. This connector is used only by the IMM.
USB connectors: Connect USB devices, such as a USB mouse or keyboard, to these connectors.
Video connector: Connect a monitor to this connector. In a two-node configuration, connect the monitor to the primary server to see standard system output.
Serial connector: Connect a 9-pin serial device to this connector. The serial port is shared with the integrated management module (IMM). The IMM can take control of the shared serial port to perform text console redirection and to redirect serial traffic, using Serial over LAN (SOL).
QPI ports 1 - 4: In a single-node configuration, use these connectors to insert either a QPI wrap card or a filler panel. The QPI wrap cards enable increased performance in certain models. In a two-node configuration, insert the QPI cables in these ports to connect another server or a memory expansion module to your server. See the documentation that came with your QPI cable kit for detailed cabling instructions.
Gigabit Ethernet 1 and 2 connectors: Use these connectors to connect the server to a network.
Rear view LEDs
The following illustration shows the LEDs on the rear of the server. For more information about solving power-supply problems, see the Problem Determination and Service Guide.
Chapter 1. The System x3850 X5 and x3950 X5 server 17