923-05155 iMac 24″ M1 2021 A2438 Ambient Light Sensor and Microphone Cable

Product Details:

Apple Part Number: 923-05155
Component Name: Ambient Light Sensor & Microphone Flex Cable
Compatible Model: iMac 24″ M1 (2021) – Model A2438
EMC Number: 3662

 
Technical Description:

This is the original Ambient Light Sensor and Microphone Flex Cable for the iMac 24-inch M1 (2021), Model A2438. It connects the ambient light sensor and the internal microphone module to the main logic board, enabling automatic brightness adjustment and audio input.

Key Functions & Features:

Dual Function Cable: Transmits data and power signals for both the ambient light sensor and microphone.
Connector Type: Precision Apple-designed flex cable with board-mounted connectors on both ends.
Routing Design: Thin, flexible, and pre-formed to match factory routing inside the iMac enclosure.
Mic Compatibility: Supports built-in studio-quality microphone array in iMac 24″.
ALS Support: Enables real-time ambient brightness detection for automatic display adjustment.
 

Installation Notes:

Cable is fragile; proper ESD-safe tools and techniques are recommended.
Best installed by a professional or technician experienced with iMac 2021 teardown/reassembly.
Connects to logic board and sensor/mic modules; no software configuration needed.
 

Compatibility Notice:

Only compatible with iMac 24″ M1 (2021) – Model A2438.
Not interchangeable with earlier Intel iMacs or other Apple Silicon variants (M1 Pro / M2, etc.).