radxa-docs · Milir-Radxa · Aug 17, 2026 · Aug 15, 2026 · Aug 17, 2026
diff --git a/docs/x/x4/hardware/power-input.md b/docs/x/x4/hardware/power-input.md
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+---
+sidebar_position: 20
+---
+
+# 电源输入接口
+
+Radxa X4 板载一个 **2-Pin 2.54mm** 间距的电源输入排针（位号 J10，丝印 PWR-IN），可用于通过外部 12V 直流电源为整板供电。
+
+## 引脚定义
+
+| 引脚 | 信号 | 说明 |
+| :--: | :--: | :--: |
+| 1 | GND | 电源地（负极） |
+| 2 | ADP12V_IN | 12V 电源输入（正极） |
+
+![Radxa X4 电源排针正负极标注](/img/x/x4/x4_power_input_header_01.webp)
+
+## 外部供电
+
+使用 12V 电源的正极和负极分别连接到主板的正极和负极引脚，即可对主板进行供电。
+
+:::warning
+请勿接错或者接反电源，不当操作可能导致设备硬件损坏。
+:::
diff --git a/i18n/en/docusaurus-plugin-content-docs/current/x/x4/hardware/power-input.md b/i18n/en/docusaurus-plugin-content-docs/current/x/x4/hardware/power-input.md
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+---
+sidebar_position: 20
+---
+
+# Power Input Header
+
+The Radxa X4 has an onboard **2-Pin 2.54mm** pitch power input header (designator J10, silkscreen PWR-IN), which can be used to power the board from an external 12V DC supply.
+
+## Pinout
+
+| Pin | Signal | Description |
+| :--: | :--: | :--: |
+| 1 | GND | Ground (negative) |
+| 2 | ADP12V_IN | 12V power input (positive) |
+
+![Radxa X4 power header polarity](/img/x/x4/x4_power_input_header_01.webp)
+
+## External Power Supply
+
+Connect the positive and negative terminals of a 12V power supply to the positive and negative pins on the board to power the board.
+
+:::warning
+Do not connect the power with wrong or reversed polarity. Improper operation may cause hardware damage.
+:::