9-Pin Serial Port Connector Pinout (DTE)

Pin

I/O

Name

1

I

Data Carrier Detect

2

I

Receive Data

3

O

Transmit Data

4

O

Data Terminal Ready

5

NA

Ground

6

I

Data Set Ready

7

O

Request To Send

8

I

Clear To Send

9

I

Ring Indicator

25-Pin Serial Port Connector Pinout (DTE)

25-Pin Parallel Port Connector Pinout (DTE)

Pin

I/O

Name

Pin

I/O

Name

1

NA

Chassis ground

1

I/O

-Strobe

2

O

Transmit Data

2

I/O

+Data bit 0

3

I

Receive Data

3

I/O

+Data bit 1

4

O

Request To Send

4

I/O

+Data bit 2

5

I

Clear To Send

5

I/O

+Data bit 3

6

I

Data Set Ready

6

I/O

+Data bit 4

7

NA

Signal ground

7

I/O

+Data bit 5

8

I

Data Carrier Detector

8

I/O

+Data bit 6

9

NC

Not Connected

9

I/O

+Data bit 7

10

NC

Not Connected

10

I

-Acknowledge

11

NC

Not Connected

11

I

+Busy

12

NC

Not Connected

12

I

+P end (out of paper)

13

NC

Not Connected

13

I

-Select

14

NC

Not Connected

14

O

-Auto feed

15

NC

Not Connected

15

I

-Error

16

NC

Not Connected

16

O

-Initialize Printer

17

NC

Not Connected

17

O

-Select Input

18

NC

Not Connected

18

NA

Ground

19

NC

Not Connected

19

NA

Ground

20

O

Data Terminal Ready

20

NA

Ground

21

NC

Not Connected

21

NA

Ground

22

I

Ring Indicate

22

NA

Ground

23

NC

Not Connected

23

NA

Ground

24

NC

Not Connected

24

NA

Ground

25

NC

Not Connected

25

NA

Ground

Keyboard

Mouse

Pin

Keyboard Signal

Pin

Mouse Signal

1

KDATA

1

MDATA

2

Reserved

2

Reserved

3

Ground

3

Ground

4

+5.0 VDC

4

+5.0 VDC

5

KCLK

5

MCLK

6

Reserved

6

Reserved

DTE = Data Terminal Equipment

DCE = Data Communication Equipment (Pasangan dari DTE)

Kalau DTE adalah TX (OUT), maka DCE adalah RX (IN)