Serial-Port Pin Assignments; Universal Serial Bus Ports; Usb Cables And Hubs - IBM eserver xSeries 350 User Reference Manual

4.
5.

Serial-port pin assignments

The following table shows the pin-number assignments for the 9-pin, male D-shell
serial-port connectors on the rear of your server. These pin-number assignments
conform to the industry standard.
Pin
1
2
3
4
5

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.
Notes:
1.
2.

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.
70
IBM® xSeries 350: User's Reference
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.
Select the serial port; then, use the arrow keys to advance through the available
settings.
Select Save Settings; then, select Exit Setup to exit from the Configuration/Setup
Utility main menu.
1
6
Table 12. Serial-port connectors pin-number assignments.
Signal
Data carrier detect
Receive data
Transmit data
Data terminal ready
Signal ground
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).
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.
5
9
Pin Signal
6 Data set ready
7 Request to send
8 Clear to send
9 Ring indicator