Compaq Presario 1600/1200 Series Notebook Computers
                               Pinouts                Faxback Doc # 50978

Your Compaq Presario 1600 Series or 1200 Series Notebook Computer has
several connectors on its rear and side panels. These connectors can be
joined to devices to expand the capability of your computer. Each connector
is labeled with an icon that indicates the device to which it can be
connected.

Most of the connectors on your computer consist of pin arrays. This means
that small metal pins protrude from the connector; the cable you plug into
the connector should have a metal plate with holes that line up with the
connector's pins. If you purchase a special printer cable or serial cable,
be sure to check the connector pin configuration.


CAUTION: You should never try to force a cable onto a connector;
this can bend the pins and make the connector unusable.


Pin-outs are also used for troubleshooting problems. Technicians may use
this information to diagnose a problem with your connectors or cables.

Keyboard/Mouse Interface

PIN       SIGNAL
1         Data
2         Unused
3         Ground
4         +5 VDC
5         Clock
6         Unused


Parallel Interface

PIN       SIGNAL
1         Strobe
2         Data bit 0
3         Data bit 1
4         Data bit 2
5         Data bit 3
6         Data bit 4
7         Data bit 5
8         Data bit 6
9         Data bit 7
10        Acknowledge
11        Busy
12        Paper end
13        Select
14        Auto linefeed
15        Error
16        Initialize printer
17        Select in
18-25     Signal ground


Serial Interface

PIN       SIGNAL
1         Carrier detect
2         Receive data
3         Transmit data
4         Data term ready
5         Signal ground
6         Data set ready
7         Request to send
8         Clear to send
9         Ring indicator


Universal Serial Bus (USB) Interface (Compaq Presario 1600 Series
Notebook Computers only)

PIN       SIGNAL
1         +5V
2         Data -
3         Data +
4         Ground
5         +5V
6         Data -
7         Data +
8         Ground


VGA Monitor Interface

PIN       SIGNAL
1         Red video
2         Green video
3         Blue video
4         Volume up
5         Return
6         Red return
7         Green return
8         Blue return
9         +5V supply
10        Sync return
11        Volume down
12        DDC data
13        Horizontal sync
14        Vertical sync
15        DDC clock

(RDS 12/29/98)