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Pins 2, 3 and 7 are used for communication on your RS232 ports. While other pins are used, most are just for protocol (RTS, CTS, and other pins for more advanced communication)
The link below gives more information on the subject.
http://www.lammertbies.nl/comm/cable/RS-232.html
What else can I help you with?
Which device would use a 25-pin connector a 50-pin connector a 68-pin connector an 80-pin connector?
68
How would you go about converting a Microsoft sidewinder joystick 15 pin connector to a db9 connector in order to use it on a laptop for DOS based flight sims?
I'm not positive, but you might be able to buy a premade adapter.
How would you rank Edison connector twist-lock connector and pin connector by 1 being the best to use and 3 being the worst to use?
STAGE PIN 1, TWISTLOCK 2, EDISON 3
Does the iPad 3 use 8 pin or 30 pin charger?
It uses the standard 48 Pin dock connector.
How do i pull pin from connector?
To pull a pin from a connector, first ensure the connector is disconnected from any power source. Use a small tool, such as a pin extractor or a flathead screwdriver, to gently press down on the locking tab or release mechanism associated with the pin. Carefully pull the pin out of the connector while maintaining a steady grip to avoid damaging the surrounding pins or the connector itself. If needed, consult the connector's manual for specific instructions related to your particular model.
How power supply connect to mother board?
Most of modern motherboads use 24 pin power connector (ATX 2.x). Older motherboards use different type that uses only 20 pin connector. ATX 2.x is usually backward compatible with older 20 pin connector.
What can use cables up to 100 meters and use a 9 pin rectangular connector?
1394B
What type of connector does a SVGA Cable Use?
15 pin, 3 rows
What component connect to the motherboard use of the 24 pin connector?
power supply
Is it safe to use your laptop with a missing third prong?
Laptop power supplies are class II products, they don't use the earth pin.
How many pins does the main power connector on a BTX board drive have?
BTX motherboards use a 24-pin power connector.
Why do laptop chargers have ground pin?
Not all do. A ground terminal is a safety feature. Yes, it is much safer when we use the laptop.
