​​Modular box card position design​​
Industrial-grade LED advertising screens generally adopt modular design, and the plug-in position of the control card is usually located on the back of the box. According to the differences in the box structure, it can be divided into three types:

• ​​Side-mounted card slot​ ​: Reserve waterproof slots on the side of the aluminum-magnesium-zinc alloy box.​ ​Support hot plug operation​​
• ​​Rear cover embedded​ ​: The box back cover is integrated with a special card compartment,​ ​Equipped with anti-dust interface design​​
• ​​Split card box​ ​: The independent control box is connected through the IP67 waterproof connector.​ ​Suitable for multi-screen cascade scenarios​​

​​Identification method of core control module​​
When the user needs to locate the card position, it can quickly identify it based on the following features:

1. Find interface areas with HDMI-IN/OUT identification
2. Check the metal protective cover marked "Control System" in the box
3. Observe the card slot with status indicator (​ ​Always on green light means normal operation​​）

​​Professional engineering plan selection comparison table​​

​​Key considerations for system integration​​
Be sure to confirm before inserting the card:

• The device is in power off (​ ​Control card electrostatic sensitivity ≤100V​​）
• Interface protective cover seal ring is complete and unbreakable
• The firmware version is compatible with the sending device (​ ​It is recommended to use V2.3 or above protocols​​）

For high-density advertising screen projects, it is recommended to use a control card with intelligent temperature control function. This type of module has a built-in temperature sensor, which can automatically adjust the operating frequency according to environmental changes. The measured data shows that it can reduce power consumption by 17%, which is particularly outstanding in humid and hot climate environments in Southeast Asia. Engineers should consider the scalability of the control system during the design stage and reserve sufficient technical redundancy for later maintenance.

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