Notes: The following diagrams and data are for use in developing trial expert systems for educational purposes only and in no way is it suggested that this is an accurate and/or exhaustive listing of such a classification. Best viewed in 800x600 resolution or above

Common External Computer Ports

female2502 male2502 male904
DB25 Female
25 pin sockets in 2 rows
Usually used for printer or Scanner connection
DB25 Male
25 pins in 2 rows
Usually used for connecting serial cables from devices like external modems
DB9 Male
9 pins in 2 rows
Usually used for connecting serial cables from mouse or external modem
hd15 din5 svhs
HD15 Female
15 pin sockets in 3 rows
Used for connecting video signal cable from monitor
Din 5 Female
5 pin sockets in semi-circle with single locating lug opposite sockets
Used for connecting older-style keyboards
S-VHS
4 pin sockets in circle with central locating lug used for connecting TV/VCR or other video equipment
compositevideo db1502 minifirewire
Composite Video
1 pin socket metal jacket for connection with external connector of plug. Used for connecting audio or video cables
DB15 Female
15 pin sockets in 2 rows Used for connecting games controllers or midi devices
Mini Firewire Port
Single socket with a central locating tab for connecting IEEE1394 firewire devices with a small plug
ps2 3mmStereo firewire
PS/2 Female
6 pin sockets in circle with central locating lug used for connecting mouse keyboard
3mm Stereo
1 pin socket plug fits completely internally Used for speaker and microphone connection
Firewire Port
Single socket with a central locating tab for connecting IEEE1394 firewire devices with a large plug
usbA rj45 rj11
USB A Port
Single flat rectangular socket with an off-set central locating tab. Used for connecting a range of devices including mouse, keyboard and scanner
RJ45 Port
Single socket with locating lug on 1 side. 8 wire connectors inside.  Used for connecting network cable
RJ11 Port
Single socket with locating lug on 1 side. 4 wire connectors inside. Used for connecting telephone line to internal modem