iMac (24-inch, M1, 2021, Two ports) USB-C Board
Before You Begin
Remove the following parts before you begin:
Tools
Nylon probe (black stick)
Support wedges
Torx T3 screwdriver
![](https://cdsassets.apple.com/live/SZLF0YNV/service-documentation/ssr/imac-24-m1-2021-2-ports-j457/100836-usb-c-board/000_RP1738_USBC_Locator.jpg)
Removal
Peel the polyester film tape from the USB-C board. Save it for reassembly.
Use the T3 screwdriver to remove the two T3 screws (923-05555) from the USB-C board.
Use the T3 screwdriver to remove two T3 screws (923-05562) from the USB-C board connector cowling.
Remove the USB-C board connector cowling and save it for reassembly.
Use the black stick to lift the end of the USB-C board flex cable off the connector. Then remove the USB-C board from the housing.
Reassembly
Position the USB-C board in the housing.
Use the flat end of the black stick to gently press the end of the USB-C board flex cable to the connector.
Position the USB-C board connector cowling over the end of the USB-C board flex cable. Then use the T3 screwdriver to reinstall the two T3 screws (923-05562) into the logic board.
Align the screw holes in the USB-C board with the pins on the rear housing. Then use the T3 screwdriver to partially install the two T3 screws (923-05555) into the USB-C board.
Reinstall the polyester film tape over the USB-C board.
Note: If you’re installing a replacement part, use the included replacement polyester film tape instead of the existing polyester film tape.
Reinstall the following parts to complete reassembly: