Find the Right Cable for Your LaptopDepending on your streaming device, you may be able to show your computer’s screen on the TV wirelessly. For example, if you have a Chromecast (or a TV with Chromecast functionality built-in), you can open Chrome on your laptop, click the three dots menu in the upper-right corner, and choose Cast to send one of your browser tabs to your TV. Similarly, if you have an Apple TV and a Mac, you can click the AirPlay icon in your Mac’s menu bar to mirror your laptop’s screen on your TV. Check your streaming box to see if has similar functionality available. Just note that this may not be ideal for video or games, since the stream may appear a bit choppy—but for showing off photos or browser tabs, it should work well.
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In other cases, you’ll want to connect your laptop to your TV directly with a cable. There are so many different connection standards out there that finding the right cable (or dongle) for your laptop is likely the most difficult part of the process—especially if you don't know the names of those ports. Here are the most common display connectors you'll find on computers, and what they're called. (Click the links to see photos of each one.)
- VGA: This was common for years, but you won't typically find it as often these days except on older or office machines (and some older TVs). Since it's analog, it won't be as high quality as the other options below, and converting the signal for a TV's HDMI port requires a dongle that plugs into the wall. But it'll do in a pinch if you have no other options.
HDMI: This is the port your modern HDTV likely uses to transmit video and audio over one cable. If you have an HDMI port on your laptop, it'll be the easiest way to connect the two together, since you won't need to buy a new cable or adapter. You can just borrow the HDMI cable from your streaming box, game console, or other device for your laptop.
- DisplayPort: Similar to HDMI, you'll find this on a lot of modern computers—though you won't find it on your TV, so you'll need an adapter to connect the two devices together.
Mini DisplayPort: As the name suggests, this is a smaller version of DisplayPort designed for thinner laptops.
USB-C: If you don't see any other display ports on your laptop, it may offer the ability to connect a display through its USB-C port—though you may have to check the laptop's manual to find out.
- Mini and Micro HDMI: These are less common than many of the above, but you may find them on some computers.
DVI: Now mostly outdated, this port is common on some older desktop PCs, and even some TVs. It will carry a display signal, but not audio. Make sure you pick the right kind of DVI cable for your laptop, as they come in a few variations.
- Mini-DVI: A smaller version of DVI found on some laptops, particularly older Apple models.
At the Defcon hacker conference today, independent security researcher Pedro Cabrera showed off in a series of hacking proofs-of-concept attacks how modern TVs—and particularly Smart TVs that use the internet-connected HbbTV standard implemented in his native Spain, across Europe, and much of the rest of the world—remain vulnerable to hackers.