Which of the following is the form factor of a standard RS-232 connector?

The correct answer is D. DB-9. RS-232 is the standard for serial communication ports (COM ports), and the standard connector used on PCs is the DB-9 (DE-9), a 9-pin D-sub connector. While RS-232 was originally defined with a 25-pin DB-25 connector, the PC industry standardized on the smaller DB-9 for…

Hardware

Question

Options

ADVI-D
BDB-15
CDIN-6
DDB-9

How the community answered

(56 responses)

A
2% (1)
B
4% (2)
D
95% (53)

Explanation

RS-232 is the standard for serial communication ports (COM ports), and the standard connector used on PCs is the DB-9 (DE-9), a 9-pin D-sub connector. While RS-232 was originally defined with a 25-pin DB-25 connector, the PC industry standardized on the smaller DB-9 for decades. DVI-D (A) is a digital video connector for monitors. DB-15 (B) is a 15-pin D-sub connector used for VGA video output, not serial communication. DIN-6 (C) is a round 6-pin connector historically used for PS/2 keyboards and mice. The DB-9 form factor is the definitive identifier for a standard RS-232 serial port connector on PC hardware.

Topics

#RS-232#DB-9#serial port#connector form factor

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