I use power strips with a switch. One fell swoop, and also the monitor is really off.
Hmm... the old PSUs with an IEC output were actually a decent idea.
I had completely forgotten about those. Did the ATX standard kill them off? I think it was only AT boards that had the side-by-side power connectors (that I put in backwards once. Oops), the physical power button, and the power out.
I recall seeing a JohnnyGuru PSU review from around 2010 where the author noted the power outlet on the PSU to connect a monitor and the completely outdated internal designs (along with the PCB's silkscreen indicating that there should have been more and larger components soldered onto the PCB, aka the manufacturer had cost-down the components after the initial design).
I'll be starting up the computer again after I finish rerouting some of the cables to dig through the BIOS again. I also had to clear the CMOS (take out the battery and press the power button for 20 seconds) after I used RAM timing settings that caused it ti unable to POST. Whoops.