Many computers include a mix of these ports. The 15-pin VGA has been used for computer video for many years, but has been largely replaced by the newer video ports like Thunderbolt and HDMI. VGA: Older computers typically come with the famous blue VGA port.Thunderbolt: A Thunderbolt port is a combination of several technologies, including DisplayPort and PCI Express, in combination with a power supply to power the external display if required.Many older computers have one of several configurations of the DVI port. DVI: The Digital Visual Interface was originally designed by the Digital Display Working Group, and was next-generation to the inferior VGA port.DisplayPort: A DisplayPort was originally designed as a superior video port to older VGA and DVI ports, but is far less popular on modern computer systems than the HDMI port.HDMI: A High Definition Multimedia Interface (HDMI) port is a computer interface that transmits uncompressed video and audio.Modern computers handle video via an HDMI port, but older computers feature a variety of other ports: Step 1: Check What Ports Are Availableīefore you start shoving wires into ports in the back of your PC or the sides of your laptop, stop and take a closer look at those ports so that you know what you're looking at. This article will cover each of these areas and should help you troubleshoot the issues you may be having with your extended displays. Have you set up your dual monitors correctly?.Is your video card capable of more than one monitor?.Does your computer support dual monitors?.Here's what you need to consider when you want to use extra displays with your computer: Can You Connect Two Monitors to Your Laptop or PC? We'll help you figure out what you have, what you need, and how to configure your multiple monitor setup.
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