Mac computers that have any of the following ports can connect to HDMI devices. Learn how to identify the ports on your Mac.
- HDMI port: Connects directly to HDMI using an HDMI cable.
- USB-C or Thunderbolt 3 (USB-C) port: Connects to HDMI using an adapter, such as the Apple USB-C Digital AV Multiport Adapter.
- Mini DisplayPort: Connects to HDMI using a third-party Mini DisplayPort to HDMI adapter or cable.
Mac computers that have an HDMI port comply with HDMI 1.4b and support:
- At least 1080p video over HDMI, and some Mac models support higher resolutions when connecting to 4K displays, 5K displays, and Ultra HD TVs
- 8-channel/24-bit audio at 192kHz, Dolby Surround 5.1, and traditional stereo
- HDCP-encrypted playback from iTunes and QuickTime Player (version 10). Safari in macOS Sierra or later also supports HDCP-encrypted playback, if the web page is HTML5-enabled and the content is FairPlay Streaming-enabled and delivered using Media Source Extensions or HTTP Live Streaming.
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If using an adapter, check the specifications of the adapter to learn about supported resolutions and other details.
After making the connection
If your Mac doesn't recognize your HDTV, display, or other HDMI device after making the connection:
![Mac Mac](https://image.slidesharecdn.com/zexmte300mbpswi-finetworkadapterdongleforpcdesktoplaptoprtl8192chipestminitravelusbwifireciversuppor-191118132653/95/zexmte-300mbps-wifi-network-adapter-dongle-for-pcdesktoplaptop-rtl8192-chipest-mini-travel-usb-wifi-reciver-support-mac-os-x-1-638.jpg?cb=1574083633)
- Turn off the HDMI device while your Mac is turned on.
- Unplug the HDMI cable from your Mac, then plug it in again.
- Turn on the HDMI device.
If the video on your HDTV or display extends beyond the borders of the screen, open Displays preferences and adjust the Underscan slider for a better fit. Use any of these methods to open Displays preferences:
- Choose Apple () menu > System Preferences, then click Displays.
- Press Shift-Command-A to open the Applications folder. Then double-click System Preferences, then click Displays.
- If your keyboard has brightness controls, press Option–Brightness Up or Option–Brightness Down.
![Bluetooth Bluetooth](/uploads/1/1/8/6/118661226/317636219.jpg)
If your HDMI device isn't receiving audio from your Mac:
- Choose Apple menu > System Preferences, then click Sound. In the Output pane, make sure that your HDMI device is selected.
- If you're connecting using a Mini DisplayPort adapter, make sure that your Mac can send audio over Mini DisplayPort.
- If you're connecting from a Mac mini, unplug any audio device that is plugged into your computer's Audio-Out port.
If your Mac goes to sleep while a video is playing or paused, you might see an HDCP error. Quit the app that is playing the video, then open the app again. If the issue continues, choose Apple menu > System Preferences, then click Energy Saver and adjust the settings so that your display doesn't turn off.
Learn more
- If your Mac has an HDMI port, you can use the Apple HDMI to DVI Adapter to connect to a DVI display.
- Mac computers don't support using CEC (Consumer Electronics Control) to control HDMI devices.
When there's no available Wi-Fi, using a cellular dongle to access the internet from your Mac is a good alternative. The connection speeds providers offer nowadays are more than enough for you to enjoy video streaming and other data-heavy activities. Sometimes, a 3G/4G cellular data connection is faster than certain Wi-Fi hotspots! Here are the steps to access the internet by connecting a 3G/4G dongle to your Mac.
Hardware requirements: 3G/4G dongle
NOTE: macOS or OS X can be restrictive. Some users will find issues adding connections to their mac. In these cases, get in touch with your network adapter manufacturer for further support.
Step 1: Connect the 3G/4G/LTE dongle through a USB port to your Mac. Open Network via System Preferences on your Mac and Create a New Service by clicking the + icon. A New Service pop-up will appear; under the Interface drop-down, choose your 3G/4G/LTE dongle and click Create.
Adapters For Mac Os X
Please note, when Creating a New Service, the Service Name can be customized to your liking. However, the Interface may show a different Mobile Network Adapter name than shown here. If you're unsure of the New Service that you need to create or the Interface does not show a Network adapter, then you should contact your dongle manufacturer or your cellular internet service provider.
Usb C Mac Dongle
Step 2: Ensure that you are connected. On the left-hand side, your 3G/4G dongle should show a Connected status; this means your Mac is now set up to use your 3G/4G dongle.