Universal Serial Bus Ports - IBM xSeries 230 6RY Hardware Maintenance Manual

conform to the industry standard.
Table 12. Serial-port connectors pin-number assignments
Pin Signal
1 Data carrier detect
2 Receive data
3 Transmit data
4 Data terminal ready
5 Signal ground

Universal Serial Bus ports

Your server has two Universal Serial Bus (USB) ports, which configure
automatically. USB is an emerging serial interface standard for telephony and
multimedia devices. It uses Plug and Play technology to determine the type of
device attached to the connector.
Notes:
1. If you attach a standard (non-USB) keyboard to the keyboard connector, the
2. If you install a USB keyboard that has a mouse port, the USB keyboard
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 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 rear of the server for attaching
USB compatible devices.
The following table shows the pin-number assignments for the USB-port
connectors on the rear of your server.
Table 13. USB-port connector pin-number assignments
Pin
1
2
3
4
76
Hardware Maintenance Manual: xSeries 230 Models 6RY, 61Y
USB ports and devices will be disabled during the power-on self-test (POST).
emulates a mouse and you will not be able to disable the mouse settings in the
Configuration/Setup Utility program.
Signal
VCC
-Data
+Data
Ground
1 5
6 9
Pin Signal
6 Data set ready
7 Request to send
8 Clear to send
9 Ring indicator