In today’s homes, offices, and classrooms, using a TV as a second screen is becoming more common thanks to its larger size, better viewing comfort, and built-in speakers that enhance both work and entertainment. However, traditional HDMI cables often create clutter and limit how you position your devices—especially if you’re casting temporarily or switching between locations. Wireless display offers a cleaner, more flexible alternative. With Lemorele’s wireless kits, you can skip the cables and software—just plug the transmitter into a USB or HDMI port on your computer, and your screen and audio will stream wirelessly to the TV within seconds. It’s a simple way to enjoy the benefits of a large screen without the mess. The guide below walks you through choosing the right port, setting things up step by step, and fixing common issues so you can get started with ease.

1. Choose the Right Port on Your Computer

Before doing anything else, take a look at the output ports available on your computer. Wireless display transmitters typically come in three types—HDMI, USB-C, and USB-A. Each works best with specific devices.

1.1 If You Have an HDMI Port

This is the most straightforward option. Simply plug the HDMI transmitter into your computer’s HDMI port, and it starts working right away. No extra software or internet connection is needed. This method is widely compatible with laptops, Blu-ray players, TV boxes, and even some security cameras.

In some cases, the HDMI port doesn’t provide enough power to the transmitter. If the device isn’t working properly, connect the included USB cable to an available USB port for extra power. This setup is especially useful in fixed locations like meeting rooms, classrooms, or living rooms, where fast deployment and low lag are key.

1.2 If You Use USB-C Ports

Modern, slim devices like MacBooks or tablets often rely on USB-C ports. If your USB-C port supports video output (also known as DisplayPort over USB-C), you can use a USB-C transmitter. Like HDMI transmitters, this setup requires no drivers or software.

Before plugging it in, check whether your device supports video over USB-C. This is usually listed in the user manual or product specifications. Many MacBooks, Samsung Tabs, Huawei MateBooks, and Xiaomi laptops support this feature. For business travelers, educators, or startup teams on the move, this is a lightweight, fast, and efficient way to get a second screen working.

1.3 If You Only Have USB-A Ports

You can still use wireless display with USB-A, but it requires a bit more setup. After plugging in the USB-A transmitter, your computer will recognize a virtual disk. Open it and run the driver installer. This adds a virtual display adapter to your system.

After installation, your system will treat the wireless connection like a regular second monitor. You can extend or mirror the screen just like with a physical display. This method works on Windows 10 and macOS 10.15 or later. It’s ideal if you don’t want to replace your computer but still want a wireless setup for your home office or studio.

1.4 Lemorele Quick Match Guide

2. How to Change Between Mirror and Extend Mode?

You can choose how to show the content once your transmitter and TV are connected.

2.1 Mirror Mode—Both Screens Show the Same Thing

In mirror mode, your computer and TV show the same picture. This is great for classrooms or giving a presentation. Everyone in the room can follow along easily, even from a distance. It’s especially helpful when you want to control your slides while others view them in real time.

2.2 Extend Mode—Make Your Screen Twice as Big

In extended mode, your TV acts like a separate screen. To keep your workspaces organized, you can drag windows from your computer to the TV. For example, you could run a PowerPoint presentation on your laptop while showing a demo video on the TV. You could also analyze data on one screen while taking notes on the other. This is especially useful for designers, video editors, analysts, or anyone who works with multiple windows.

To do this, open your computer's display settings and select the option for multiple displays. You can then move windows around and choose which one is your main screen.

3. What If the TV Doesn’t Play Sound?

You might see the picture but not hear anything from the TV. This is usually not a hardware problem. Most of the time, the computer still sends sound to its internal speakers instead of the wireless output.

3.1 Set the Audio Output Manually

On Windows, go to Settings > System > Sound, find the Output Device section, and select the one labeled "HDMI" or "Wireless Audio."

On macOS, open System Settings, go to Sound, then choose Output, and select the wireless display device.

3.2 Make It a Habit to Double-Check

Before a meeting, class, or video call, confirm that your audio output is set correctly. This simple step can help you avoid moments when your display works but the sound doesn’t.

4. Plug-and-Play or Driver Install?

Most HDMI and USB-C transmitters are plug-and-play. Once plugged in, they usually connect within a few seconds. No drivers, no software, and no internet are required.

USB-A transmitters require a driver. When plugged in, a virtual disk appears on your computer. Open it and run the installer. After setup, your system will recognize the wireless display as a second monitor. You can then configure it to mirror or extend the screen.

5. What to Do If You Run Into Problems

Even though these kits are designed to be easy, things might not always go smoothly. Here are some quick troubleshooting tips.

5.1 You See Video But No Sound

Check if your audio output is still set to your laptop speakers. Switch it to the wireless audio device.

5.2 You See No Picture

Try lowering your screen resolution to 1080p. Some TVs cannot handle ultra-high resolutions from a computer.

5.3 The Device Feels Hot

It’s normal for the transmitter to get warm during use. Make sure there’s proper ventilation around it.

5.4 The Signal Is Choppy

If the signal is unstable, try using a different USB port or an external power source. Also, ensure there’s a clear line of sight between the transmitter and receiver. Avoid placing them near large electronics or metal walls, which can interfere with the connection.

6. The Future Is Wireless

You no longer need tangled cables to use your TV as a second screen. With Lemorele’s wireless kits, just plug in the transmitter, power on the receiver, and your screen is shared in seconds.

This setup fits a wide range of users—IT managers who need scalable meeting room solutions, entrepreneurs who work on the go, and teachers who need to switch content quickly. As wireless display technology continues to improve, it’s quickly replacing traditional wired setups. The result is less clutter, faster setup times, and smoother collaboration. The wireless future is already here—and it starts with one simple connection.