Legacy VGA and DVI display ports will likely no longer be used in PCs over the next five years as newer interfaces gain in popularity, NPD In-Stat said in a study released on Thursday.

New laptops today come with the thinner HDMI (high-definition multimedia interface) and DisplayPort to connect high-definition TVs, monitors or projectors. Those interfaces have made significant inroads in recent years, with growing support for them from PC makers and consumer electronics companies, said Brian O'Rourke, research director at NPD In-Stat. Intel and Advanced Micro Devices are phasing out chipset support for VGA by 2015, which could discourage PC makers from adding VGA ports. PC makers would need to add a separate chipset on the motherboard for VGA connectors, which could add to the cost of making a PC, O'Rourke said. Advanced Micro Devices has announced it would phase out chipset support for DVI by 2015.