Vga cable

[dame333]

i changed the vga cabel but the new one have not the same resolution as the old one. Did i get wrong cable or what?

[DaveLembke]

How many pins does this cable have?      14 or 15

https://h30434.www3.hp.com/t5/Desktops-Archive-Read-Only/Vga-cable-14-vs-15-pin/td-p/321478

VGA 15 pin cables often have only 14 active pins. Pin 9 is missing. (This missing pin is on the middle row of pins, one pin from the end.) This missing pin is a problem for flat screen TVs.

Pin 9 is required by most, if not all, plasma and lcd TV's to supply back to the computer graphics card information about the available resolution of the monitor. Pin 9 carries a 5 volt signal to the DDC (display data channel). New computer monitors (LCD or CRT) do not seem to need this pin, and work fine without it -- as a result the majority of VGA cables labeled as "15 pin" really only have 14 pins, and this is never explained or noted in the packaging or product specifications! The only way to tell if a "15 pin" VGA cable actually has all 15 pins is to look at the connector and count the pins. If the middle row has only 4 pins, then the critical pin 9 is missing