IBM Eserver xSeries 360 Type 8686, User Reference Manual

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IBM® xSeries 360: User’s Reference
The following illustration shows the I/O ports on the rear of the server.
Universal Serial Bus ports
The server has three Universal Serial Bus (USB) ports (one on the front, two on the
rear), which are configured automatically. USB is a serial interface standard for
telephony and multimedia devices. It uses Plug and Play technology to determine the
type of device that is attached to the connector.
Notes:
1. If you attach a standard (non-USB) keyboard to the keyboard connector, the USB
ports and devices will be disabled during the power-on self-test (POST).
2. If you install a USB keyboard that has a mouse port, the USB keyboard emulates
a mouse, and you will not be able to disable the mouse settings in the
Configuration/Setup Utility program.
USB cables and hubs
You need a 4-pin cable to connect devices to the USB ports. If you plan to attach
more than three USB devices, you must use a hub to connect the devices. The hub
provides multiple connectors for attaching additional external USB devices.
USB technology provides up to 12 megabits-per-second (Mbps) speed with a
maximum of 127 external devices and a maximum signal distance of five meters (16
ft) per segment.
USB-port pin assignments
Each USB port has an external connector on the server for attaching USB-compatible
devices.
The following table shows the pin-number assignments for the USB ports.
RXE management
port
ASM interconnect
port
RXE expansion
port Video port
USB 1
USB 2
Mouse port
Keyboard port
Ethernet port
Remote Supervisor
Adapter fault LED
(amber)
Remote Supervisor
Adapter power LED
(green)
Remote Supervisor
Adapter serial port
Remote Supervisor
Adapter Ethernet port
AC power connector 1
AC power connector 2
AC power connector 3
4 3 2 1