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#### Cabling Requirements

Review these cabling notes before attaching cables to the server.

- Minimum cable connections for the server:

  - At least one system on-board Ethernet network connection (NET port)

  - The service processor serial management port (SER MGT port)

  - The service processor network management port (NET MGT port)

  - A power cable for each power supply

- Service processor management ports: There are two service processor management ports for use with the Oracle ILOM service processor.

  - The service processor serial management port (labeled SER MGT) uses an RJ-45 cable and is always available. This port is the default connection to the service processor.

  - The service processor network management port (labeled NET MGT) is the optional connection to the service processor. This port becomes available after you configure network settings for the service processor (through the service processor serial management port).

    The service processor network management port uses an RJ‐45 cable for a 10/100 BASE-T connection. This port does not support connections to Gigabit networks.

- Ethernet ports are labeled NET0, NET1, NET2, and NET3. The Ethernet interfaces operate at 10 Mbps, 100 Mbps, and 1000 Mbps.

Table 9 Ethernet Connection Transfer Rates

Connection Type | IEEE Terminology | Transfer Rate
--- | --- | ---
Ethernet | 10BASE-T | 10 Mbit/sec
Fast Ethernet | 100BASE-TX | 100 Mbits/sec
Gigabit Ethernet | 1000BASE-T | 1000 Mbit/sec

- VGA DB-15 video port: Use the video port to attach a color monitor to the server.

- USB Ports: USB ports support hot-plugging. You can connect and disconnect USB cables and peripheral devices without affecting system operations.

  - You can only perform USB hot-plug operations while the OS is running. USB hot-plug operations are not supported when the system `ok` prompt is displayed or before the system has completed booting.

  - You can connect up to 126 devices to each of the four USB controllers, for a total of 504 USB devices per system.

- Power cables: Do not attach power cables to the power supplies until you have finished connecting the data cables, and have connected the server to a serial terminal or a terminal emulator (PC or workstation).

  Note - The server goes into Standby mode and the Oracle ILOM service processor initializes as soon as a power cable connects a power suppply to an external power source. System messages might be lost after 60 seconds if a terminal or terminal emulator is not connected to the serial management port before power is applied.

##### Related Information

- Connecting the Server Cables

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