Xiaomi Mi TV 4X remains one of the most popular models in the line of smart TVs from the Chinese brand due to the combination of affordable prices, high-quality picture and wide connectivity. However, when buying or configuring a device, users often face the question: what connector is used in Xiaomi 4X to connect external devices, sound systems or antenna?
In this article, we will analyze in detail all types of connectors that are in different versions of Mi. TV 4X (version 43", 50", 55" and 65"), their technical specifications and purpose. HDMI-port 4K@60Hz, Can you connect the old game console through AV, And what adapters are you going to need to connect your headphones or your soundbar, and we're going to look at some of the common port issues and how to fix them.
Xiaomi Mi TV 4X models: which connectors are located where
The Mi TV 4X range includes several versions, Released in 2018-2020, with diagonals from 43 to 65 inches. Despite the external differences, most models have the same port layout, except for some nuances in versions for different regions (for example, European and Asian versions).
The main differences between the models are the quantity of HDMI-port and availability AV-input (composite connector for older devices). TV 4X 55" in the basic configuration has 3 HDMI, While some regional versions may only have 2, check the back sticker or documentation to determine your TV's configuration.
- 📺 Mi TV 4X 43" — 2× HDMI, 1× USB, AV, Ethernet, optical audio
- 📺 Mi TV 4X 50" — 3× HDMI, 2× USB, AV, Ethernet, optical audio
- 📺 Mi TV 4X 55" — 3× HDMI, 2× USB, without AV European versions, Ethernet, optical audio
- 📺 Mi TV 4X 65" — 3× HDMI (one-on ARC), 2× USB, Ethernet, optical audio
Note: in 2020 models (e.g. Mi) TV 4X 2020 Edition may not be available AV-As Xiaomi gradually abandons legacy analog ports in favor of digital interfaces.
HDMI-Ports: Versions, Opportunities and Limitations
The main connectors for modern devices are HDMI. The Xiaomi Mi TV 4X uses HDMI 2.0 ports (in some versions, HDMI 2.0b), which support:
- 🎮 Permission 4K (3840×2160) upon 60 Hz (important for game consoles and media players)
- 🎥 HDR10 Dolby Vision (in models with support)
- 🔊 ARC (Audio Return Channel - only one of the HDMI-Ports (usually marked as HDMI ARC)
- 🎵 eARC - not supported (important for Dolby Atmos sound systems)
Important nuance: not all HDMI-portage TV 4X Usually only one port (usually one port, HDMI 1 HDMI (3) supports ARC, It allows you to transmit sound from your TV to your soundbar or receiver without any additional cables!
| Type HDMI | Max, permission. | Support for HDR | ARC/eARC | Examples of use |
|---|---|---|---|---|
| HDMI 2.0 | 4K@60Hz | Yes (HDR10) | ARC (only in one port) | PS4 Pro, Apple TV 4K, sound panels |
| HDMI 1.4 | 4K@30Hz | No. | No. | Old consoles, cameras. |
⚠️ Attention: If you are connecting NVIDIA Shield or Xbox Series X to Mi TV 4X And you notice the flickering of the screen in 4K, Try to turn on the console settings YCbCr 4:2:2 instead of RGB. This is due to capacity limitations HDMI 2.0.
USB-Ports: what are the formats and what are the formats
Xiaomi Mi TVs TV 4X one- or two-piece USB-port USB 2.0 (depending on the model) They are designed to:
- 📁 Connecting flash drives and hard drives (up to 2 TB formatted in the FAT32 or NTFS)
- 🎬 Video playback (formats supported) MKV, MP4, AVI codeced H.264, H.265)
- 🎵 Playing music (MP3, FLAC, WAV)
- 🖼️ Viewing a photo (JPEG, PNG, BMP)
It's important: USB-Ports do not support writing data, only reading, and they can not be used to connect a keyboard or mouse (unlike newer Xiaomi models like Mi). TV Q2). If you need to control your TV from a keyboard, use Bluetooth.
⚠️ Note: When connecting an external hard drive with power from USB The TV may not recognize the device due to the port power shortage, in which case use a powered Y cable or an external source.
The port is not physically damaged.|The flash drive is formatted in FAT32/NTFS|Files do not have special characters in their name.|Try another one. USB-port (if there are several)|Reboot the TV after connecting-->
Audio connectors: optical output and 3.5 mm
To connect external sound systems in Xiaomi Mi TV 4X has two main interfaces:
- Optical output (S/PDIF) - transmits lossless digital sound, supports PCM, Dolby Digital formats, but does not support Dolby Atmos (due to the lack of eARC).
- The 3.5mm audio jack is an analog output for headphones, soundbars or active speakers, and the sound quality is lower than the optical one, but does not require additional adapters.
If your TV doesn’t have an HDMI ARC (e.g., 43 models), optical output becomes the only way to transmit audio from the TV to the receiver. Bluetooth is better for connecting headphones (if the model supports), since the 3.5 mm jack can interfere with high volume.
How to connect a sound bar without ARC?
Other connectors: Ethernet, AV and antenna input
In addition to the main interfaces, the Xiaomi Mi TV 4X has additional ports:
- 🌐 Ethernet (RJ-45) — For wired Internet connection, the speed is limited to 100 Mbps (most models do not have a gigabit port).
- 📡 Entrance (RF) — for cable or terrestrial TV connection. supports standards DVB-T/T2 and DVB-C.
- 📼 AV-entrance (RCA) — Only in some models (usually 43" and 50 (VHS, DVD-players) through tulips".
If your model is not AV-Input, but you need to connect the old device, use HDMI-AV adapter (e.g. Portta) PET0301S). However, keep in mind that the image quality will be worse than with a digital connection.
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If the TV can’t find channels through the antenna input, try manually specifying the region in the settings (Settings → Channels → Adjustment of the antenna → Region).
Common Connection Problems and Their Solutions
Xiaomi Mi TV 4X users often experience port-related issues, and here are the most common issues and ways to fix them:
| Problem. | Possible cause | Decision |
|---|---|---|
| HDMI-port doesn't recognize the device | Weak contact, damaged cable, incompatible signal format | Try another cable or port. HDMI-Devices turn on YCbCr mode 4:2:2. |
| USB-device is not determined | Incorrect file system, lack of power | Format the flash drive in FAT32. Use the Y cable for HDD. |
| No sound through the optical output | Incorrect audio output settings | Go to Settings → Sound → Digital audio output and select PCM. |
If the TV stopped seeing all connected devices at the same time, this may indicate a firmware failure, in which case resetting to factory settings (Settings → About TV → Reset) or flashing over USB will help.
⚠️ Note: If the device is connected through HDMI The screen flashes or artifacts appear, this may be due to overheating of the chipset.Switch off the TV for 30 minutes and check the vents on the back - they should not be clogged with dust.