The difference is that Apple didn't even use connectors that *LOOK* like an industry standard. (And, at the time, there was no ATX standard.)

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The standard was AT in that era (SE/MacII/MacIIcx) and the ONLY difference was that Apple's Under-Powered PSUs used a different connector.

The point is that Dell took an already-established industry standard (ATX) and tweaked it specifically to make it incompatible, so people would have to buy replacements directly from them.

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. . . and this is different from what Apple did somehow?

Sony did the same thing, (at least as recently as 2004,) having otherwise-standard ATX motherboards customized to have a different mounting screw layout. (The boards were made by standard companies, like Asus, and otherwise were 100% identical to non-Sony Asus boards. They just had mounting holds different than ATX, so you can't put a "stock" Asus board in a Sony, nor put a Sony-modified Asus board in a standard ATX chassis.)

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Apple (His Highness "the Steve") killed off the only effort Apple ever made to adopt ANY industry standard!

At least Sony's boards attached to everything else that was industry standard for the era!

Got drill? Got standoffs? No biggie if you ask me! [] ]'>

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final microrant:

No difference, IMHO, Apple's PSUs were always industry sub-standard, with nary a single watt to spare on a maxed out computer. Each and every model had a "custom" design that was incompatible with all other case designs and their PSUs failed at rates nearly as bad as those of the very lowest end of Industry Compatible PSU mfr's products, very likely because they were marginal in terms of power and cooling budgets straight from the drawing board!

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Whatever! Gimme a suitable substitute or a better reason not to use what I've got here, the price is right and the form factor is spot on! :rambo: