I/O Connectors 115
USB Connector
The system’s USB connectors support USB-compliant peripherals such as keyboards, mice, and
printers and may also support USB-compliant devices such as diskette drives and CD drives.
Figure B-5 illustrates the pin numbers for the USB connector and Table B-5 defines the pin
assignments for the connector.
NOTICE: Do not attach a USB device or a combination of USB devices that draw a maximum current of
more than 500 mA per channel or +5 V. Attaching devices that exceed this threshold may cause the USB
connectors to shut down. See the documentation that accompanied the USB devices for their maximum
current ratings.
Figure B-5. USB Connector Pin Numbers
Integrated Network Adapter Connector
The system’s integrated network adapters function as separate network expansion cards while
providing fast communication between servers and workstations. Figure B-6 illustrates the pin
numbers for the network connector and Table B-6 defines the pin assignments for the connector.
Figure B-6. Network Adapter Connector
Table B-5. USB Connector Pin Assignments
Pin Signal I/O Definition
1 Vcc N/A Supply voltage
2DATAIData in
3 +DATA O Data out
4 GND N/A Signal ground
link indicator activity indicator
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