What Do You Need to Know about HDMI Projector?

By XGIMI Tech - 2025-4

What is an HDMI projector?

HDMI projector refers to the projection equipment equipped with an HDMI interface, which can receive high-definition content directly through digital signals. Through HDMI transmission, it can avoid the distortion of analog signal conversion, widely adapted to modern mainstream devices, such as game consoles, TVs, cell phones, computers, and so on. Almost all smart projectors on the market are equipped with an HDMI slot.

Get to Know More about What is HDMI

HDMI, or High-Definition Multimedia Interface, is a digital audio and video transmission technology used to transmit uncompressed, high-quality audio and video signals between devices, such as projectors and tablets, computers and monitors, and so on.

Since its introduction in 2002, HDMI has gradually replaced traditional analog interfaces (e.g. VGA, AV). Its core function is to support the simultaneous transmission of high-definition video and multi-channel audio, support for the highest resolution (e.g. 8K), HDR (High Dynamic Range), 3D and other functions.

Of course, the transmission effect is not only determined by the HDMI interface version of the device but also affected by the quality of the HDMI cable.

Three Versions of HDMI Ports

• HDMI 1.4: Supports up to 4K@30Hz or 1080p@120Hz (10.2Gbps bandwidth).

• HDMI 2.0: Supports 4K@60Hz or 1080p@240Hz (18Gbps bandwidth).

• HDMI 2.1: Supports 4K@120Hz, 8K@60Hz or 1080p@360Hz (48Gbps bandwidth).

We recommend the more advanced 2.0 and 2.1 HDMI projectors, which can output high-refresh-rate signals for smoother content presentation.

HDMI-Related Notions You Should Know

• Refresh Rate: In Hertz. For example, 120hz means displaying 120 frames per second, which can make the dynamic image smoother and reduce the dragging shadow, especially suitable for fast-paced games. While 60hz can already meet the needs of daily movie watching.

• HDMI ARC and eARC: Projector with HDMI ARC port (Audio Return Channel) supports Dolby Digital, DTS 5.1, etc. eARC (Enhanced Audio Return Channel) supports Dolby Atmos, DTS:X, LPCM 7.1.

XGIMI AURA 2 UST Projector 4K with three HDMI Ports (One is eARC Supported)

What Devices Can You Connect to Projector Using HDMI Cable?

Generally, we can watch TV shows or movies in projector-integrated streaming systems like Google TV, Android TV, and other OSs. However, there may be specific needs to connect to other devices, like exploring various casting options, enjoying large-screen gaming with your switch, or making a presentation.

1. Connect Laptop to Projector via HDMI

You may connect PCs like computers, laptops, and Macbooks to a projector with HDMI input using an HDMI cable directly, for PPT presentations, Excel displaying in meetings, multitasking split-screen work, and convenient video editing, etc. This kind of direct HDMI connection avoids the delay of wireless casting and fulfills the need for large-screen casting to increase efficiency.

2. Connect Phone to Projector through HDMI

How to connect iPhones, Android phones, and tablets to portable projectors for on-the-go use? You can use wireless screen mirroring via Bluetooth and Wifi, DLNA, or connect them through an HDMI cable with a compatible adapter. For example, you need to buy an extra HDMI to Lightning or HDMI to USB-C converter for digital projector HDMI connections.

3. Connect Gaming Console to HDMI Projector

It is usual for people to use the projector for an immersive large-screen gaming experience. PS5, Xbox, Switch, and other game consoles can be connected to high-refresh-rate HDMI ports. This reduces image drag and tearing, and low-latency mode improves operation follow-through.

(Image: You can connect the projector to a computer or game console using an HDMI to Micro HDMI cable.)

4. Connect to Apple TV and TV Box

Connecting live streaming devices like Apple to your projector is a good way to have more content options, like watching Netflix shows, Disney 4K HDR movies, live stream TVs, and so on.

Troubleshooting: Why is My Projector Saying No Signal with HDMI?

If your HDMI projector shows “No Signal”, try these:

• Check Cable Connections: Replug the HDMI cable and ensure it’s fully inserted, with no blocking or soaking.

• Test the HDMI Cable: Try a different certified HDMI cable. Check the projector specification and see what version of HDMI port is it (1.4 or 2.0 or 2.1).

• Verify Source Device Output: Confirm the device isn’t in sleep mode and is outputting a compatible resolution/refresh rate.

• Update Firmware/Drivers: Outdated firmware on the projector with HDMI or graphics drivers on a PC can cause compatibility issues.

• Reset EDID Data: Use a tool like CRU (Custom Resolution Utility) to clear corrupted display data. Sometimes things happen like your Nintendo Switch defaults to 720p in handheld mode. You can manually set it to 1080p in System Settings > TV Output. 

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