iMac (24-inch, M1, 2021, Four ports) Display Backlight Flex Cable
Before You Begin
Remove the following parts before you begin:
Tools
- Nylon probe (black stick) 
- Support wedges 

Removal
- Position the housing with the back facedown and the top closest to you.  
- Peel off the polyester film tape from the end of the display backlight flex cable. Save the polyester film tape for reassembly.  
- Squeeze both sides of the end of the display backlight flex cable and pull it straight out of the connector.  
Reassembly
- Slide the end of the display backlight flex cable into the connector.  
- Reinstall the polyester film tape onto the display backlight flex cable connector. - Important: Install new polyester film tape whenever it's provided with a replacement part. 
  
Reinstall the following parts to complete reassembly:
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