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I/O Ports and Connectors

Dell™ PowerEdge™ 1655MC Systems Installation and Troubleshooting Guide

  I/O Connectors

  Serial Connector

  PS/2-Compatible Keyboard and Mouse Connectors

  Video Connector

  USB Connector

  10/100/1000 BASE-T Uplink Port

  10/100 Management Port

  Network Cable Requirements

  Serial Null Modem Cable Connector


I/O Connectors

I/O connectors are the gateways that the system uses to communicate with external devices, such as a keyboard, mouse, 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 illustrates the ports and connectors on the system.

Figure B-1. I/O Ports and Connectors

Table B-1 shows the icons used to label the connectors on the system.

Table B-1. I/O Ports and Connectors Icons

Icon

Ports and Connectors

Serial port

Mouse connector

Keyboard connector

Video connector

USB connector

10/100 Ethernet management port

10/100/1000 BASE-T uplink port

Serial Connector

The serial connector uses a 9-pin D-subminiature connector. See the documentation for the ERA/MC controller for information on using the serial port for configuration.

Figure B-2 illustrates the pin numbers for the serial connector and Table B-2 defines the pin assignments for the connector.

Figure B-2. Serial Connector Pin Numbers

Table B-2. Serial Connector Pin Assignments

Pin

Signal

I/O

Definition

1

DCD

I

Data carrier detect

2

SIN

I

Serial input

3

SOUT

O

Serial output

4

DTR

O

Data terminal ready

5

GND

N/A

Signal ground

6

DSR

I

Data set ready

7

RTS

O

Request to send

8

CTS

I

Clear to send

9

RI

I

Ring indicator

Shell

N/A

N/A

Chassis ground

PS/2-Compatible Keyboard and Mouse Connectors

The PS/2-compatible keyboard and mouse cables attach to 6-pin, miniature DIN connectors. Figure B-3 illustrates the pin numbers for these connectors and Table B-3 defines the pin assignments for these connectors.

Figure B-3. Keyboard and Mouse Connector Pin Numbers

Table B-3. Keyboard and Mouse Connector Pin Assignments

Pin

Signal

I/O

Definition

1

KBDATA or MFDATA

I/O

Keyboard data or mouse data

2

NC

N/A

No connection

3

GND

N/A

Signal ground

4

FVcc

N/A

Fused supply voltage

5

KBCLK or MFCLK

I/O

Keyboard clock or mouse clock

6

NC

N/A

No connection

Shell

N/A

N/A

Chassis ground

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-4 illustrates the pin numbers for the video connector and Table B-4 defines the pin assignments for the connector.

Figure B-4. Video Connector Pin Numbers

Table B-4. 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 devices such as diskette drives and CD drives (supplied by Dell). 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 that draws a maximum current of more than 500 mA per channel or exceeds +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

Table B-5. 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

10/100/1000 BASE-T Uplink Port

The system's network switch module 10/100/1000 BASE-T uplink ports function as a separate network expansion card while providing fast communication between servers and workstations. Figure B-6 illustrates the pin numbers for the uplink ports and Table B-6 defines the pin assignments for the port.

Figure B-6. 10/100/1000 BASE-T Uplink Port

Table B-6. 10/100/1000 BASE-T Uplink Port 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

10/100 Management Port

The system's 10/100 management port allows you to manage the server modules. Figure B-7 illustrates the pin numbers for the management port and Table B-7 defines the pin assignments for the port.

NOTE: The analog rack interface port pin assignments are proprietary and are not illustrated.

Figure B-7. 10/100 Management Port

Table B-7. 10/100 Management Port 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 network switch module 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.
NOTE: The cable used for the analog rack interface port is limited to 15.24 m (50 ft).

For detailed guidelines on operation of a network, see "Systems Considerations of Multi-Segment Networks" in the IEEE 802.3 standard.

Serial Null Modem Cable Connector

The serial null modem cable connector is a RJ11 connector that supports the use of a null modem cable to configure the network switch module. For additional information, see the network switch module documentation. Figure B-8 illustrates the serial null modem connector and Table B-8 defines the pin assignments for the connector.

Figure B-8. RJ11 Serial Null Modem Connector

Table B-8. RJ11 Serial Null Modem
Connector Pin Assignments 

Pin

Signal

1

CTS

2

SOUT

3

Not connected

4

Not connected

5

SIN

6

RTS

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