# 請問8722DM和8722CS的區別是什麽？

**URL:** <https://forum.amebaiot.com/t/8722dm-8722cs/4451>\
**Category:** Hardware\
**Tags:** rtl872xd\
**Created:** [October 25, 2025, 6:34am UTC](https://forum.amebaiot.com/t/8722dm-8722cs/4451 "2025-10-25T06:34:22Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![szjdjun](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@szjdjun](https://forum.amebaiot.com/u/szjdjun)\
**Post date:** [October 25, 2025, 6:34am UTC](https://forum.amebaiot.com/t/8722dm-8722cs/4451/1 "2025-10-25T06:34:22Z")

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請問8722DM和8722CS的區別是什麽？

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**Author:** ![M-ichae-l](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.amebaiot.com/m-ichae-l/32/33_2.png) [@M-ichae-l](https://forum.amebaiot.com/u/M-ichae-l)\
**Post date:** [October 27, 2025, 3:35am UTC](https://forum.amebaiot.com/t/8722dm-8722cs/4451/2 "2025-10-27T03:35:31Z")

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RTL8722DM 與 RTL8722CS 最大差異在於 WiFi 頻段：DM 支援雙頻（2.4GHz + 5GHz），CS 只支援單頻（2.4GHz）。其他如藍牙、MCU 核心、記憶體與外設幾乎相同。若需 5GHz 或高速傳輸選 DM，僅用 2.4GHz 可選 CS，成本較低。

- [datasheet](https://www.amebaiot.com/en/amebad/#rtk_amb21)裏面有詳細解釋

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**Author:** ![szjdjun](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@szjdjun](https://forum.amebaiot.com/u/szjdjun)\
**Post date:** [October 28, 2025, 7:15am UTC](https://forum.amebaiot.com/t/8722dm-8722cs/4451/3 "2025-10-28T07:15:03Z")

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我了解了，谢谢你的回复！