This cable does not have 4 prongs in the side correct? ive bought 2 vga cables thus far and ive never been able to have dual moniters

There are 3 distinct types of DVI connectors. The 3 types are DVI-D (Digital only single link & dual link), DVI-I (Digital & Analog single link & dual link), and DVI-A (Analog), which yields 5 total connector patterns. When you look at the pattern of the female DVI connector on your PC it will tell you what connector you require to connect and then you need to find a conversion cable that has the male equivalent for your needs. If you are still confused as to which connector you require, do a simple online search for "DVI connector types". This gives you a variety of results, but simply look at one of the diagrams given that explains the 5 patterns. Compare those 5 to your connector and then look for a conversion cable that has a matching male connector. If you get the incorrect cable it will either not work or may not even allow you to connect it. And these cables may be 1-way only, which this one is. It coverts DVI-D 24+1 (Digital only Dual Link) to VGA only. It will not convert VGA to DVI. And if I understand your question about the "4 prongs", no, this cable does not have them. The connectors with "4 prongs" are Analog type connectors. The 3 connector types with 4 prongs are either DVI-I (single link & dual link) or DVI-A. Not sure if this is what you were asking about, but hope it helps explain what you need to look for.

Do you connect the dvi to the monitor or pc or either or

DVI-D out from PC to VGA in on monitor. It's an *active* adapter which means it has a built in circuit that converts the digital DVI-D signal from the graphics card to an analog signal for the VGA monitor input. Back-feeding the circuit trying to convert analog VGA to Digital DVI may work I have never tried it. But that's not what the circuit was designed for and don't cry if it doesn't work or you toast your GPU or monitor. Older graphics cards that had DVI-I (with the extra 4 pins) passed an analog signal on those 4 extra pins so you could use a non-active adapter and go both ways with those.

Brand	BENFEI
Connector Type	DVI, VGA
Cable Type	DVI, VGA
Compatible Devices	Monitor, Projector
Compatible Phone Models	No Compatible Phone Models
Recommended Uses For Product	Connecting to Monitors and Projectors for Video Display
Connector Gender	Male-to-Male
Data Transfer Rate	1.65 Gigabits Per Second
Shape	Round
Number of Pins	25
Frequency	6E+1 Hz
Net Quantity	1 Count
Item Weight	0.14 Kilograms
Specification Met	FCC
Indoor/Outdoor Usage	Indoor
Number of Items	1
Outer Material	Other
Country of Origin	USA
Model number	000215black
Item Weight	140 g
Product Dimensions	183 x 1 x 1 cm; 140 g
Item model number	000215black
Item Height	1 Centimeters
Item Width	1 Centimeters
Auto Focus Included	No
Are batteries included?	No

Active DVI-D to VGA, Benfei DVI-D 24+1 to VGA 6 Feet Cable Male to Male Gold-Plated Cord

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