Source: http://esloquehay.com/v5/2007/04/28/arrancar-un-pc-sin-teclado-enchufado/
With PCs today is quite easy since we can find the option "halt on no errors", enabling us to move the boot time errors occur or not, for example, that is not plugged in a keyboard.
But with older computers this is not so easy, since the BIOS is likely to not have this option and if you connect a keyboard will not start. "And we want a PC without a keyboard?, Because for example if we use an old PC to a server, without display, no keyboard, no mouse ... just the tower, then accessed remotely via ssh for example, if we to change something. In this case no solution. Many system if no keyboard detected by monitoring volatje through the connector. To skip this comprovación we weld a 10Kohm resistor between GND (pin 4) and +5 V (pin 5). This is the standard AT connector, the fat. If the connector is PS / 2 we can use an adapter to convert it to AR or bypass as before but this time between pins 3 and 4 of the PS / 2 connector. The diagrams show the connector seeing the same connector, not the PC. The "n" is the central groove of it.
With PCs today is quite easy since we can find the option "halt on no errors", enabling us to move the boot time errors occur or not, for example, that is not plugged in a keyboard.
But with older computers this is not so easy, since the BIOS is likely to not have this option and if you connect a keyboard will not start. "And we want a PC without a keyboard?, Because for example if we use an old PC to a server, without display, no keyboard, no mouse ... just the tower, then accessed remotely via ssh for example, if we to change something. In this case no solution. Many system if no keyboard detected by monitoring volatje through the connector. To skip this comprovación we weld a 10Kohm resistor between GND (pin 4) and +5 V (pin 5). This is the standard AT connector, the fat. If the connector is PS / 2 we can use an adapter to convert it to AR or bypass as before but this time between pins 3 and 4 of the PS / 2 connector. The diagrams show the connector seeing the same connector, not the PC. The "n" is the central groove of it.
