I/O connectors are the gateways that the system uses to communicate with external devices, such as a keyboard, mouse, printer, or monitor. This section describes the various connectors on your system. If you reconfigure the hardware connected to the system, you may also need the pin number and signal information for these connectors. Figure B-1 shows the connectors on the back of the system.
Figure B-1. Back-Panel I/O Connectors
Table B-1 shows the icons used to label the connectors on the system.
Table B-1. I/O Connector Icons
Icon
Connector
Video connector
Serial connector
USB connector
NIC connector
Video Connector
You can attach a VGA-compatible monitor to the system's integrated video controller using a 15-pin high-density D-subminiature connector. Figure B-2 illustrates the pin numbers for the video connector and Table B-2 defines the pin assignments for the connector.
Figure B-2. Video Connector Pin Numbers
Table B-2. Video Connector Pin Assignments
Pin
Signal
I/O
Definition
1
RED
O
Red video
2
GREEN
O
Green video
3
BLUE
O
Blue video
4
NC
N/A
No connection
5–8, 10
GND
N/A
Signal ground
9
VCC
N/A
Vcc
11
NC
N/A
No connection
12
DDC data out
O
Monitor detect data
13
HSYNC
O
Horizontal synchronization
14
VSYNC
O
Vertical synchronization
15
NC
N/A
No connection
USB Connector
The system's USB connector supports USB-compliant peripherals such as keyboards, mice, and printers and may also support USB-compliant devices such as diskette drives, CD drives, and compact flash drives. Figure B-3 illustrates the pin numbers for the USB connector and Table B-3 defines the pin assignments for the connector.
NOTE: Your system provides five USB connectors on the back panel and two USB connectors on the front panel.
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-3. USB Connector Pin Numbers
Table B-3. USB Connector Pin Assignments
Pin
Signal
I/O
Definition
1
Vcc
N/A
Supply voltage
2
DATA
I
Data in
3
+DATA
O
Data out
4
GND
N/A
Signal ground
Integrated NIC Connector
The system's integrated NIC functions as a separate network expansion card while providing fast communication between servers and workstations. Figure B-4 illustrates the pin numbers for the NIC connector and Table B-4 defines the pin assignments for the connector.
Figure B-4. NIC Connector
Table B-4. NIC Connector Pin Assignments
Pin
Signal
I/O
Definition
1
TD+
O
Data out (+)
2
TD–
O
Data out (–)
3
RD+
I
Data in (+)
4
NC
N/A
No connection
5
NC
N/A
No connection
6
RD–
I
Data in (–)
7
NC
N/A
No connection
8
NC
N/A
No connection
Network Cable Requirements
The NIC supports a UTP Ethernet cable equipped with a standard RJ45-compatible plug. Observe the following cabling restrictions.
NOTICE: To avoid line interference, voice and data lines must be in separate sheaths.
Use Category 5 or greater wiring and connectors.
Do not exceed a cable run length (from a workstation to a hub) of 100 m (328 ft).
For detailed guidelines on operation of a network, see "Systems Considerations of Multi-Segment Networks" in the IEEE 802.3 standard.
