I was about to wonder if children today think of computers and their peripherals as inherently infused with LEDs, but then I remembered it's always been this way.
I wonder when technology started glowing...

@Freyaday AFAIK the first glowing thingies on computers were debug lights attached to data lines, address lines, control signals, and just any interesting binary signal you could find.

It was probably extremely useful for single-stepping the CPU, as you could see every logical state in the circuits and figure out where it goes wrong. And even when not single stepping, I've heard that at low clock speeds you can actually notice patterns in the blinking, and learn to tell "happy" patterns (everything working fine) from "unhappy" ones (buggy, stuck in infinite loop, etc).

en.wikipedia.org/wiki/Blinkenl

@Wolf480pl
My new router doesn't have any blinkenlights and it makes me sad. I wonder when they were first added, though. And I guess the other question is "when did glowing become culturally synonymous with technology?".

@Wolf480pl
It's an eero basestation hooked up to a 4-port switch that then goes into the walls.

@Freyaday hm... if it's the right eero I'm looking at, it has at least a status light.

Also, what kind of switch doesn't have blinkenlights?

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@Wolf480pl
It's got a status light, I guess, but no blinkenlights. I think the switch has blinkenlights but it's buried behind a cabinet now so I can't check.
Ironically, the little repeater things actually have nightlights on them!

@Freyaday I think for the aesthetic purposes, you could easily emulate blinkenlights with a 24-port rack-mounted switch (eg. sth like Nortel Baystack 5510) and a bunch of ethernet loops :P
The stock fans being loud as fuck add to the big-iron-computer climate.

@Wolf480pl
Well, I did put a USB fan in next to the eero because it was uncomfortably hot to the touch, so hey. 90+% savings right there.

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