iMac (24-inch, M1, 2021, Four ports) Wi-Fi Antenna
Before You Begin
Remove the following parts before you begin:
Tools
- Antenna tool 
- Nylon probe (black stick) 
- Support wedges 
- Torx T3 screwdriver 

Removal
- Use the T3 screwdriver to remove the three T3 screws (923-05574) from the Wi-Fi antenna.  
- Use the T3 screwdriver to remove the three T3 screws from the antenna grounding clips on the logic board. - Note: The T3 screw (923-05174) (1) closest to the connector is shorter than the other two T3 screws. - (923-05174) (1) 
- (923-05173) (2) 
 
  
- Use the antenna tool to lift the end of the Wi-Fi antenna cable from the connector on the logic board. 
- Use the black stick to peel the antenna cable tape from the housing.  
- Carefully lift the cable out of the channel in the speaker.  
- Remove the Wi-Fi antenna from the housing.  
Reassembly
- Route the Wi-Fi antenna cable as shown. Then press along the length of the antenna cable tape to adhere it to the housing. - Important: Ensure that the antenna cable tape covers the etched areas on the housing as shown. 
  
- Route the antenna cable around the adapter board.  
- Use the flat end of the antenna tool to press the end of the Wi-Fi antenna cable to the connector on the logic board. 
- Use the T3 screwdriver to reinstall the three T3 screws into the antenna grounding clips on the logic board. - Note: The T3 screw (923-05174) (1) closest to the connector is shorter than the other two T3 screws. - (923-05174) (1) 
- (923-05173) (2) 
 
  
- Use the T3 screwdriver to reinstall the three T3 screws into the Wi-Fi antenna.  
Reinstall the following parts to complete reassembly: