For what it's worth, the second letter of the d-sub naming convention indicates the width of the shell. A DB15 would be excessively wide for the number of pins.

For what it's worth, the second letter of the d-sub naming convention indicates the width of the shell. A DB15 would be excessively wide for the number of pins. The correct name for the classic three row VGA port is DE-15 and it uses the same width shell as the DE-9 often used for serial ports. Note, old Mac's used a wider, two row DA-15 at one point. The DE-15 is occasionally called an HD-15 and the correctness of that is widely debated on internet forums.