You can stick wires with mains voltage into any two pins of any motherboard connector but there’s a reason they’re not shaped like an AC receptacle 💥. Unless it’s a ZX Spectrum, that cheap thing used the most basic connector (3.5mm jack) for everything: cassette I/O, video output and, unregulated 9V DC power input from the transformer brick, and people would often fry it.
You can stick wires with mains voltage into any two pins of any motherboard connector but there’s a reason they’re not shaped like an AC receptacle 💥. Unless it’s a ZX Spectrum, that cheap thing used the most basic connector (3.5mm jack) for everything: cassette I/O, video output and, unregulated 9V DC power input from the transformer brick, and people would often fry it.