What is HDMI-CEC and how to use it

💡 Need to know

• HDMI-CEC lets devices control each other. One remote can power on your TV, console, and soundbar.
• Most brands rename it. Look for Anynet+, Simplink®, BRAVIA Sync™, or VIERA Link™.
• If devices turn on by themselves, disable it. HDMI-CEC can sometimes cause unexpected behavior.

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More devices often mean more time fiddling with settings. All you want to do is unwind with a comedy movie, but first, you need to find your soundbar remote. Or you have a Fortnite session planned with your friends, but you can't figure out how to switch from your DVD player to your console. With HDMI-CEC, you can connect your devices and avoid all these issues. 

At Asurion, we know how to make your devices play nicely together. If you're feeling frustrated by a TV that keeps turning on and off by itself, or by mixing up nearly identical remotes, we've got the solutions you need. So what is HDMI-CEC, and how can it help you manage your tech? 

What is HDMI-CEC?

HDMI-CEC stands for High-Definition Multimedia Interface-Consumer Electronics Control. This feature lets up to 15 devices communicate and send commands to each other. 

It works by sending signals through a shared HDMI cable, so devices can tell each other what to do. For example, when you press the Power button on your Xbox®, it can automatically switch on your TV. HDMI-CEC also lets you control all linked devices with a single remote—no more rifling through your couch cushions for a streaming device remote. 

How HDMI-CEC makes your life easier

You don't need a full-blown movie theater to enjoy the HDMI-CEC setting​. Here are a few benefits of this feature: 

• One-touch play switches on your TV whenever you turn on a media source, such as a gaming console. 
• System standby powers down all connected devices when you turn one off, saving energy. 
• Automatic audio controls keeps your devices at the perfect volume. 
• One remote equals less clutter. 

HDMI-CEC is more versatile than HDMI-Audio Return Channel (ARC). Here's a quick comparison of HDMI CEC vs ARC: 

• HDMI-CEC creates a network of devices that communicate and control each other. 
• HDMI-ARC sends audio between your TV and another device, such as a soundbar. 

For example, HDMI-ARC lets you listen to a horror movie through your speaker system, but it won't automatically turn on the speakers. With HDMI-CEC, you can turn on the TV and the speakers with a single click of the remote. 

Of course, you don't need to choose between HDMI ARC vs. CEC. Both features can work together to improve your audio and simplify your life. 

Finding and enabling HDMI-CEC on your devices

The TV is usually the main hub in an HDMI-CEC network, but not all devices support it. Here's how to check if your TV supports it: 

1. Open your TV's menu and navigate to Settings. 
2. Click HDMI Settings and look for HDMI-CEC. 
3. On some devices, you may need to click Settings > System > Control Other Devices. 
4. If you don't see HDMI-CEC listed in your TV settings, look in the manual or check with the manufacturer. 

Don't see HDMI-CEC anywhere? Most manufacturers list this feature under a brand name, such as: 

• Samsung Anynet+
• BRAVIA Sync™
• EZ-Sync™
• LG Simplink®
• VIERA Link™

If you find one of these features in your HDMI control settings, you'll probably need to enable it before you can start connecting devices. Follow these steps: 

1. Use your TV remote to open the main menu. 
2. Click Settings or Setup. 
3. Click HDMI Settings or System > Control Other Devices. If you don't see either of these options, look for something like External Device Manager. 
4. Look for HDMI-CEC or one of the brand names listed above. 
5. Enable HDMI-CEC. 

Once you've enabled HDMI-CEC, it's time to connect compatible devices, such as soundbars and projectors. Use the HDMI ARC or eARC ports to link these gadgets to your TV. You may need to enable HDMI-CEC settings on these devices as well, so check their manuals for guidance. 

When to turn HDMI-CEC off

After you set up HDMI-CEC, you may notice your TV or Xbox turning on by itself. That can be spooky, especially if your TV starts blaring the weather channel in the middle of the night. Your TV may also randomly switch inputs. One minute, you're about to rescue your teammate in Call of Duty — the next, you're staring at the menu for the DVD you watched three nights ago. 

If your devices start acting up, consider disabling HDMI-CEC. Reverse the steps from the previous section: 

1. Open your TV's Settings or Setup menu. 
2. Navigate to HDMI Settings or External Device Manager. 
3. Toggle off HDMI-CEC. 

Unplugging and reconnecting your devices can also reset any glitches affecting your HDMI-CEC connection.

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FAQ

What does HDMI-CEC do?

HDMI-CEC allows connected devices to control each other through the HDMI cable. For example, turning on your console can automatically power on your TV.

Why does my TV turn on by itself?

HDMI-CEC may be enabled and responding to another connected device. Try disabling it in your TV settings.

Is HDMI-CEC the same as HDMI ARC?

No. HDMI-CEC controls devices, while HDMI ARC sends audio between devices. They can work together.

How do I know if my TV supports HDMI-CEC?

Check your TV settings for HDMI-CEC or a brand-specific name like Anynet+ or Simplink®.