Power Button Cable for MacBook Air 13″ A3240 Early 2025

Product Description

The MacBook Air A3240 Power Button Cable is a replacement flex cable designed for the 13-inch MacBook Air M4 Early 2025. It is suitable for replacing a damaged, torn, or faulty power button and Touch ID flex cable assembly.

This MacBook Air A3240 Power Button Cable is compatible with the A3240, Mac16,12, and EMC 8781 MacBook Air 13-inch Early 2025 model. The A3240 is the M4-powered 13-inch MacBook Air introduced in 2025.

Common part-number references for the power/Touch ID assembly include 821-04012 and 821-04012-A. Please compare the original cable, connector, model number, and part marking before ordering.

Compatible Models

• Apple MacBook Air 13-inch M4 Early 2025
• MacBook Air A3240
• MacBookAir Mac16,12
• EMC 8781
• Compatible A3240 configurations including:
  • MC6T4
  • MC6A4
  • MC6C4
  • MC6U4
  • MW0W3
  • MW0X3
  • MW0Y3
  • MW103
  • MW123
  • MW133

Compatible Part Numbers

• 821-04012
• 821-04012-A
• 661-50107 – related Apple part reference

Product Details

• Product Type: Power Button Flex Cable
• Compatible Brand: Apple
• Compatible Model: MacBook Air A3240
• Screen Size: 13-inch
• Processor: Apple M4
• Generation: Early 2025
• Model Identifier: Mac16,12
• EMC: 8781
• Function: Power Button / Touch ID Flex Connection
• Part Number: 821-04012 / 821-04012-A
• Condition: Replacement Spare Part

Warranty Details

Warranty: 1 Month Warranty
Warranty Service Type: Replacement Warranty
Warranty Type: Seller Warranty

Important Note:-

• Please verify your exact MacBook Air model A3240, EMC number, connector, cable shape, and original part number before ordering.
• This cable is designed specifically for the 13-inch MacBook Air A3240 Early 2025 M4.
• Common identification numbers include 821-04012 and 821-04012-A.
• Touch ID is paired with the original logic board. Replacing the flex/button assembly should not be advertised as automatically restoring Touch ID functionality.
• This product is the power button cable/flex assembly only unless the product package specifically states that the Touch ID button or additional components are included.
• Do not confuse the power button cable with the A3240 interposer/daughterboard cable 821-05409-02. They are different components.
• Professional installation is strongly recommended because the flex cable and connectors are delicate.
• Product images are for reference only. Actual markings and appearance may vary.
• Warranty does not cover physical damage, torn flex cables, broken connectors, liquid damage, incorrect installation, soldering damage, or modification.
• If the product is found to be out of stock after ordering, the payment will be refunded.
• Functionality-related problems reported within the warranty period are eligible for replacement according to warranty terms.

FAQs

1. Is this power button cable compatible with MacBook Air A3240?

Yes. It is designed for the 13-inch MacBook Air A3240 Early 2025 M4, also identified as Mac16,12 and EMC 8781.

2. What is the part number for the A3240 power button cable?

Common part-number references include 821-04012 and 821-04012-A.

3. Does this cable restore Touch ID?

Touch ID functionality is paired with the MacBook’s logic board. A replacement power button/flex cable should not be assumed to restore Touch ID automatically.

4. Is this the same as the A3240 daughterboard cable?

No. The power button cable and the daughterboard-to-logic-board cable are different components. The latter is commonly referenced as 821-05409-02.

5. How can I confirm compatibility?

Check the bottom case or system information for A3240, then compare the original cable’s connector, shape, markings, and part number with 821-04012 / 821-04012-A before ordering.