Just like a smart TV, a home entertainment projector offers plenty of connectivity options. Whether you’re looking to play games, enjoy physical media, or hook up a soundbar, it’s important to know what options are available on a projector, and what cords and cables you’ll need to make these connections viable.

Before you invest in any kind of projector, from a casual portable model to a premium model that will replace a smart TV, it’s important to know what ports are included, and how you can optimize the choices you have.

HDMI 2.1 connections are necessary

Faithfully transfer high-quality audio and video

Most current projectors will offer at least one HDMI port, allowing you the fast and faithful transfer of audio and video from any number of devices. The High-Definition Multimedia Interface cable allows high-quality audio and video formats to move quickly between devices. It’s the most common and popular connection that exists currently. It’s the main connection used when connecting devices such as a gaming console, Blu-ray player, or soundbar.

Keep in mind that there are different versions of HDMI cables and a couple of different port options as well. HDMI 2.1 cables are pretty common and the preferred option if you’re looking to set up a home theater system. These cables are required for high-end features, particularly for gaming. If you’re hooking up a sound bar or stereo system, you’ll want to use a ARC (Audio Return Channel) or eARC (enhanced ARC) port, the latter of which allows for higher-quality formats to be transmitted. HDMI 2.0 cables will suffice if you’re not using a premium projector or connecting the latest gaming console; its max refresh rate, resolution, and bandwidth are adequate for casual viewing.

Optimal or 3.5mm aux provide audio

Consider projector sound options

In addition to HDMI, or sometimes in lieu of it (on cheaper models), there are two options for connecting audio. If you’re going the portable, budget-friendly route when it comes to buying a projector, you’re likely to encounter a 3.5mm aux jack. It’s an older connection, providing basic stereo sound transfer. It was typically found with headphones of the distant past, but still shows up on some projector models; you’ll just need to make sure you have a compatible output. Some portable Bluetooth speakers may have the option, which would pair well with a small, portable projector.

A much higher-end option is an optical output, which allows the transfer of mid-range audio formats such as DTS or Dolby Digital. While it doesn’t support the top formats, it’s more reliable and stable than a 3.5mm aux option, and can support a worthwhile home theater system complete with a soundbar and pair of speakers.

Versatile USB ports and cables

Different options allow for varied connections

Your projector may also have a variety of USB ports, including type A, B, or C, depending on the type and model. The cords may be employed for different purposes: they can charge the projector, grant access to files on a phone or computer, or allow for streaming devices to be connected.

Typically, you’ll find a USB-A port on a projector so that you can connect a streaming device or access files on another device. This is common on projectors without a built-in smart system, because it needs alternative pathways to access media.

Older projects may feature RCA or Multi-Pin cables

Dated options may pop up on some models

There are two other connection types that older users may be familiar with. RCA connections, which feature at trio of colored cables in red, yellow, and white, may still be found on some older or more versatile projectors. The yellow cord transfers video, while the red and white transfer right and left audio channels, respectively. These are low-quality options that aren’t found much anymore, and won’t be on premium entertainment projectors. While some current versions of these cables tend to last longer and provide more stability, they aren’t able to transfer the top audio and video formats.

Similarly, multi-pin AV cables, which may feature 9 or 15 pins that connect to either end, are also a dated and rarer cable option. A VGA cable, with 15 pins, is an older means of transferring video, while a DB9 cable offers control of a projector, but no transfer of audio or video.

Wired cable and internet connections exist

Enjoy faithful and reliable streaming

Lastly, some more advanced projectors may have a port for an internet connection or a cable-in port. Both of these are more likely found in versatile, mid-range projectors for those investing in a home theater. The LAN port allows you to establish a wide connection to the internet, ideal for streaming and gaming without any interruption. Online gaming, in particular, is well-served by a stable, reliable connection in favor of Wi-Fi that may drop or buffer.

Though less common, some projectors may allow you to connect to your cable provider, granting you access to any number of channels you subscribe to. In the world of streaming, with so many top projectors featuring built-in operating systems, this option won’t be found as frequently. But if you’re tired of high subscription prices, you might want a projector with this option.