Foreign supply and manufacture ...
The only, major engineering discipline that has "grown up" virtually "all metric" is electrical engineering. Everything I've learned as an electrical engineer, has been metric, absolutely no imperial. I think I barely touched imperial with thermodynamics, but virtually nothing else.
Personal computers may often have imperial standard dimensions on the enclosure, but the power supplies have always been metric. Even for the more extremely rare power supplies produced domestically in the US, you'll almost always find metric dimensions.
That's because a foreign supply. Mechanics in the US have long needed both imperial and metric tools. Several components and subsystems are assembled outside the US, even for the Big 3. Although a few, newer plants have gone metric, especially if robotic sub-assembly is involved.
The only, major engineering discipline that has "grown up" virtually "all metric" is electrical engineering. Everything I've learned as an electrical engineer, has been metric, absolutely no imperial. I think I barely touched imperial with thermodynamics, but virtually nothing else.
Personal computers may often have imperial standard dimensions on the enclosure, but the power supplies have always been metric. Even for the more extremely rare power supplies produced domestically in the US, you'll almost always find metric dimensions.
