VGA cables, or Video Graphics Array cables, are used to connect computers to monitors or projectors. They transmit analog video signals, allowing for the display of images and graphics. VGA connectors typically have 15 pins arranged in three rows, which help ensure a stable connection. Although VGA technology is older and has been largely replaced by digital connections like HDMI and DisplayPort, it is still found in some older devices. VGA cables are known for their durability and can support resolutions up to 1080p, making them suitable for basic video display needs.