powermac g5 what do all the numbers mean on the logic board + how does one confirm that it will be OK in my machine?

I have an old Powermac G5.I suspect the Logic Board is faulty because of constant black screen.

How do I determine accurately which logic board will replace the one in situ.

The long line of numbers/letters on the Logic Board just seem confusing - some say

the last 3 symbols from the last one (on the left side) are the EEE CODE but what does this mean and

how does one determine if the logic boards are interchangeable with other G5 Models?

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