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Cables and Connectors

[Answered] What is a VGA Cable?

VGA: The Visual Standard of the Past

VGA (Video Graphics Array) cables were the dominant standard for connecting computers to displays for many years. While you’ll find them on older computers, monitors, projectors and some TVs they’ve been replaced by HDMI and DisplayPort.

What They Do

Analog Signal Transmission: VGA cables carry analog video signals. This means the picture quality can degrade over long distances or with interference.

Resolution Support: VGA cables support resolutions up to HD (1080p) and sometimes even higher depending on the cable quality and the connected devices. So technically they could still be working to this day if HDMI didn’t take over.

Key Features

15 Pin Connector: VGA cables are easily recognizable by their blue trapezoidal connectors with 15 pins arranged in three rows.

Screw Locks: The connectors have screw locks on either side to for a tight connection but they obviously work just fine even if you don’t screw them in.

Cable Types: VGA cables come in different lengths and with varying levels of shielding to reduce signal interference.

When You Might Still Use VGA

Older Hardware: If you’re working with older computers, monitors and projectors that don’t have newer ports like HDMI then VGA is still an excellent connection solution.

Basic Display Needs: For simple office work or general computer use where high resolution graphics aren’t important, VGA will still be sufficient.

Important Things

No Audio: VGA cables carry only video signals. You’ll need a separate audio cable for sound transmission.

Modern Alternatives: HDMI and DisplayPort have higher resolutions, better image quality and the ability to carry audio signals inside a single cable.

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