However, nothing in the design ensures that the ground pins form the first make or the last break in the connection, so hot-swapping may introduce surges in signal lines that may or may not be adequately protected against damage. the user cannot connect or disconnect the output device while the host is running), although in practice this can be done and usually does not cause damage to the hardware or other problems. The VGA interface is not engineered to be hot-swappable (i.e. Devices that comply with the DDC host system standard provide 5 V ± 5% and supply a minimum of 50 mA to a maximum of 1 A. Four pins carried Monitor ID bits, which were rarely used VESA DDC redefined some of these pins and replaced the key pin with +5 V DC power supply. In the PS/2, pin 9 was keyed by plugging the female connector hole this prevented non-VGA 15 pin cables from being plugged into a VGA socket. It turns on the specific monitor when the system unit is powered on. The IBM PS/55 Display Adapter defined pin 9 as "+12V". The IBM 8513 monitor defined pin 5 as "Self Test", which displays a white screen when the cable is disconnected (the pin is not connected to ground). The original IBM PS/2 defined different signals assignments. VGA connectors and cables carry analog component RGBHV (red, green, blue, horizontal sync, vertical sync) video signals, and VESA Display Data Channel (VESA DDC) data. On laptop computers or other small devices, a mini-VGA port was sometimes used in place of the full-sized VGA connector.įew new devices now include VGA connectors, and it generally coexists with DVI or the newer and more compact HDMI and DisplayPort interface connectors.Ī female DE-15 output in a laptop computer. The 15-pin VGA connector was provided on many video cards, computer monitors, laptop computers, projectors, and high definition television sets. A Video Graphics Array (VGA) connector is a three-row 15-pin DE-15 connector.
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