There are no differences between the domestic and international Macintosh
logic boards that would limit VDE approval (VDE, or VDE 0871, is a German code
governing electronic components and performance.
However, the logic boards produced for domestic Macintosh systems are tested to
meet DOMESTIC certification requirements only. Even though the logic boards are
the same, the components used will be sourced from different vendors, depending
on where the boards are produced.
This picture may be further complicated because some countries require vendor
source information for certification. If the vendor source is changed, a new
certification is required.