it's not always 9 pins. you can get pretty creative regarding the number and type of pins (high current, coax) you can fit in that shell:

DE with 2 High current contacts:

https://de.wikipedia.org/wiki/D-Sub#/media/Datei:D-Sub_conne...

DE with 15 contacts ("VGA"):

https://de.wikipedia.org/wiki/D-Sub#/media/Datei:D-SUB_DE-9-...

▲

geraldcombs 5 days ago | parent | next [-]

There's also 13-W3: DB shell, 13 pins, 3 of them coax: https://en.wikipedia.org/wiki/DB13W3. They were used for high-end workstation video back in the day.

	▲	donaldihunter 5 days ago \| parent [-]
		I came here to share this cursed connector. I remember it well from Sun workstations

▲

Am4TIfIsER0ppos 6 days ago | parent | prev [-]

https://en.wikipedia.org/wiki/File:D-Sub_connectors_size_DE_...

https://en.wikipedia.org/wiki/File:D-SUB_DE-9-F_BLUE_VGA_IMG...