5 ITX: add product introduction

Signed-off-by: Jack Ma <[email protected]>

docs/rock5/rock5itx/getting-started/introduction.md

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 # 产品介绍
 
-Radxa ROCK 5 ITX 是一款完全兼容 Mini-ITX 外形的单板计算机/主板，采用 Rockchip RK3588 SoC。
-它拥有开源软件和硬件文档，是制造商、物联网爱好者、业余爱好者、游戏玩家和 PC 用户的理想平台。
+Radxa ROCK 5 ITX 是瑞莎团队全力打造的一款全面兼容 Mini-ITX 规范的单板计算机/主板。搭载高性能Rockchip RK3588 SoC，此款主板标志着开源单板机领域全面迈向 ARM PC 时代。相较于传统的X86 PC主板，ROCK 5 ITX具备以下显著特点：
+
+## 完美兼容性
+
+ROCK 5 ITX 严格按照 PC 产业标准设计，完全符合 ATX 规范。它可以无缝适配标准 PC 机箱、散热器和电源等外设，提供了极高的兼容性和灵活性。
+
+## 丰富的接口选择
+
+作为一款ARM PC，ROCK 5 ITX 提供了比同价位传统PC主板更丰富的接口选项。它支持 HDMI 输入、PoE供电等特色功能，这些通常在X86主板上不常见，极大地扩展了使用场景和可能性。
+
+## 超低能耗
+
+ROCK 5 ITX 在保证强大性能的同时，CPU功耗不超过10W，整机待机功耗低至1.5W。此外，它还支持被动散热，使得系统运行更为安静和能效。
+
+## 强大的多媒体处理能力
+
+借助于RK3588 的强大硬件编解码能力，ROCK 5 ITX 支持高达8K视频解码及多屏显示输出，能同时驱动3个4Kp60显示器和一个2K的eDP或MIPI屏幕。支持 S/PDIF 数字音频及模拟音频输出，使其成为理想的多媒体娱乐中心或HTPC平台。
+
+## 开源支持
+与常见X86主板不同，ROCK 5 ITX 提供了完整的硬件设计原理图和软件源代码。这一开放性使得它非常适合DIY爱好者和开发者进行个性化修改和功能扩展。
+
+ROCK 5 ITX 不仅是一款高性能的ARM基础PC板，更是一个多功能、可扩展的开发平台，适合从业余爱好者到专业开发者使用，无论是进行高端游戏、多媒体处理、还是复杂的开发和实验，都能提供强大的支持。

i18n/en/docusaurus-plugin-content-docs/current/rock5/rock5itx/getting-started/introduction.md

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 # Product Introduction
 
-The Radxa ROCK 5 ITX is a fully Mini-ITX form factor compatible single board computer/motherboard utilizing the Rockchip RK3588 SoC.
-With open source software and hardware documentation, it is an ideal platform for makers, IoT enthusiasts, hobbyists, gamers and PC users.
+The Radxa ROCK 5 ITX, meticulously crafted by the Radxa team, is a fully Mini-ITX compliant single-board computer/motherboard. Equipped with the high-performance Rockchip RK3588 SoC, this motherboard marks a significant step into the ARM PC era for open-source single-board computers. Compared to traditional X86 PC motherboards, the ROCK 5 ITX offers the following distinct features:
+
+# Perfect Compatibility
+
+The ROCK 5 ITX is designed strictly in accordance with PC industry standards and fully complies with the ATX specification. It seamlessly adapts to standard PC cases, coolers, and power supplies, offering high compatibility and flexibility.
+
+# Rich Interface Options
+
+As an ARM PC, the ROCK 5 ITX provides more interface options than traditional PC motherboards at the same price point. It supports distinctive features such as HDMI input and PoE power supply, which are often uncommon in X86 motherboards, greatly expanding its use cases and possibilities.
+
+# Ultra-Low Power Consumption
+
+While ensuring powerful performance, the CPU power consumption of the ROCK 5 ITX does not exceed 10W, and the whole machine's standby power consumption is as low as 1.5W. Additionally, it supports passive cooling, making the system quieter and more energy-efficient.
+
+# Powerful Multimedia Capabilities
+
+Thanks to the RK3588's strong hardware encoding and decoding capabilities, the ROCK 5 ITX supports up to 8K video decoding and multi-screen display outputs. It can drive three 4Kp60 monitors and one 2K eDP or MIPI screen simultaneously. With support for up to 912K sampling rate for both digital and analog audio outputs, it serves as an ideal multimedia entertainment center or HTPC platform.
+
+# Open Source Support
+
+Unlike common X86 motherboards, the ROCK 5 ITX provides complete hardware design schematics and software source code. This openness makes it highly suitable for DIY enthusiasts and developers for personalized modifications and functionality enhancements.
+
+The ROCK 5 ITX is not only a high-performance ARM-based PC board but also a versatile, expandable development platform suitable for everyone from hobbyists to professional developers. Whether it's for high-end gaming, multimedia processing, or complex development and experimentation, it offers robust support.