Universal Serial Bus Connectors; Video Connector - IBM 84885BU Maintenance And Troubleshooting Manual

The hot-swap-drive backplane controls the SCSI IDs for the internal hot-swap drive
bays. However, when you attach an external SCSI device to an optional SCSI
adapter, you must set a unique ID for the device. See the information that comes
with the device for instructions to set its SCSI ID.
You can attach external SCSI devices using an optional SCSI adapter. To select
and order the correct adapter for use with external devices, contact your IBM
marketing representative or authorized reseller. When using an optional SCSI
adapter, you must also connect the SCSI adapter to the SCSI LED connector on
the system board to receive an indication of SCSI hard disk drive activity.
Note: On server models that support SATA hard disk drives, you can attach only an
See "System board internal connectors" on page 86 for the location of the SCSI
connectors. For information about the maximum length of SCSI cable, see the
American National Standards Institute (ANSI) SCSI standards on the ANSI Web site
at http://www.ansi.org/. Adhering to these standards will help to ensure that the
server operates correctly.

Universal Serial Bus connectors

Use a Universal Serial Bus (USB) 2.0 connector to connect a USB device. USB 2.0
technology transfers data at up to 480 Mb per second (Mbps) with a maximum of
127 devices and a maximum signal distance of 5 meters (16 ft) per segment (if the
device that is attached to the server is a USB 2.0 device). If multiple USB devices
are attached to the server, the USB hub must be 2.0; otherwise, all USB 2.0
devices will transfer data at 12 Mbps. Using Plug and Play technology, USB devices
are configured automatically. The following illustration shows a USB connector.
Use a 4-pin cable to connect a device to a USB connector. If you need to connect
more USB devices than the server has USB connectors for, use a USB hub to
connect additional devices.
If you connect a PS/2 (non-USB) keyboard to the keyboard connector, USB ports
and devices are disabled during POST.
If you connect a USB keyboard that has a mouse port, the keyboard emulates a
mouse, and you cannot disable the mouse settings in the Configuration/Setup Utility
program.

Video connector

Use the video connector to connect a monitor to the server. The connector is dark
blue to help you identify it. The following illustration shows an industry-standard
15-pin analog video connector on the rear of the server.
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xSeries 226 Type 8488 and 8648: Hardware Maintenance Manual and Troubleshooting Guide
external SCSI tape drive to an optional SCSI adapter.
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