IBM eServer xSeries 135, Руководство пользователя

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IBM xSeries 135: User’s Reference
Viewing or changing the serial-port assignments
To view or change the serial-port assignments:
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.
Note: The Devices and I/O Ports choice appears only on the full configuration
menu. If you set two levels of passwords, you must type the
administrator password to access the full configuration menu.
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 connector
The following table shows the pin-number assignments for the 9-pin, male D-shell
serial-port connector on the rear of your server. These pin-number assignments
conform to the industry standard.
Universal Serial Bus ports
Your server has two Universal Serial Bus (USB) ports, 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.
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.
Table 5. 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
1
5
6 9