IBM 8645 - Eserver xSeries 220, Руководство по техническому обслуживанию аппаратной части

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Viewing or changing the serial-port assignments
To view or change the serial-port assignments, do the following:
1.
Restart the server and watch the monitor screen.
2. When the message
Press F1 for Configuration/Setup
appears, press F1.
3. From the main menu, select Devices and I/O Ports ; then, press Enter.
4. Select the serial port; then, use the arrow keys to advance through the available
settings.
5. Select Save Settings ; then, select Exit Setup to exit from the
Configuration/Setup Utility main menu.
Serial-port connectors
The following table shows the pin-number assignments for the 9-pin, male D-shell
serial-port connectors on the system board. These pin-number assignments
conform to the industry standard.
1
5
6 9
Table 10. Serial-port connectors pin-number assignments
Pin Signal Pin Signal
1 Data carrier detect 6 Data set ready
2 Receive data 7 Request to send
3 Transmit data 8 Clear to send
4 Data terminal ready 9 Ring indicator
5 Signal ground
Universal Serial Bus ports
The server has two Universal Serial Bus (USB) ports, which configure
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 USB 1 or USB 2. If you plan to attach
more than two 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 connectors
Each USB port has an external connector on the system board for attaching
USB-compatible devices.
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Hardware Maintenance Manual: xSeries 220 Type 8645