There are number of reasons for replacing your VGA cable such as you may want to connect a longer length VGA cable, you may use VGA splitter which requires 2 cables or most importantly you might have lost original cable. Manufacturers like Dell usually charge more than 15 pounds just for the shorter length cable. So, in order to save your money you can also purchase an independently available branded VGA cable with length of 1.8 meters for only 5 pounds from online wholesale stores.
A VGA cable is also known to be a Dsub15 because of the presence of 15 pins in 3 rows. While some of the cable manufacturers made only 14 pins for cable as second pin present in the middle row is not used for all the times. So, they have saved money by not wiring it.
While buying a new VGA cable for your system there is a need to consider that you should give weight to shielding effects present in cable. These shielding effects are necessary because it prevents cable from signal loss and thus prevents degradation of images. This insulation on cables also lessens the effect of interference that occurs due to other cables and electrical instruments are present close to each other. The effect of interference is usually obvious on screen image due to distortion and degradation issues. You can also reduce this effect by checking ferrite cores must be present at each end on the cable. Barrel shaped coils and ferrite cores present in the either side of cable help to minimize the effects of electrical magnetic interference. If you are using VGA splitters then you should use shielded VGA cable because of the splitters, video signals becomes weaker.
You can also use VGA cables with length up to 50 meters depends upon your requirements. In some cases you may use repeater box to enhance signals and ensures to boost up the signal quality in order to provide optimum performance at longer lengths.
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