Chosen Solution

I do not have a sound problem. I need to know the difference between the i/o flex cable vs a power audio board cable. I am pretty sure I need the 821-1477-a flex cable but I want to confirm it since different websites seem to be interchanging these names.

Apple Part #: 923-0128 Manufacturer Part #: 821-1477-A I/O flex cable or I/O USB Audio Board Flex It’s the same part.