Just to answer this; LEDs can be damaged if set into the wrong order. The power and reset buttons simply close a circuit; it doesn’t really matter which one is plus and which one is minus. But LEDs can burn out if you are unlucky.
Most consumer grade electronics have protections against this though, so 99% chance your LEDs will just not turn on if inserted in the wrong order.
Just on that. I’ve seen a friend, back in the early 00s create a short with the jumpers and melt some wires.
Not sure exactly what he did (maybe wired up a LED to reset switch or something like that) but this whole dealing with jumper pins for front panel (along with CMOS reset on some boards) is complete BS.
We’ve got RGB everything, multiple gigabytes per second for storage, and the PC industry can’t get its shit together for a couple of LEDS and switches.
I shouldn’t be surprised, given the efforts of the USB steering committee.
Yeah i agree this still sucks even today.
Asus boards come with a Q-connector which is nice.
But the reason why this still hasn’t been standardized,
is because mobo manufacturers tempt to use different pin layouts,
which i agree is really stupid.
Leds are polarized, so it should be labeled on the motherboard around the fp connector pins.
No you wont burn out a LED if you connect it backwards within its working voltage. Most often the rated reverse voltage are double or higher than the rated forward voltage.
Also most LED drivers are current limited so it’s even safer.
So if the voltage and current are safe for normal forward connection it will also be safe for backward connection.
For example. A normal 5mm red led has a forward voltage of 2.5V and a reverse voltage of 5V.
So as long as the voltage is under 5V nothing at all will happen if you reverse the LED because no current is flowing. But you will not ever put that LED in a circuit that can give much more than 2.5V.
Cranking the current higher makes the LED shine brighter and run hotter until it fails so most often we use a current limiting resistor or another type of current limiting design to not risk overdriving the LED. This would also protect the LED in the reverse direction.
So the conclusion is, if the LED is running fine in forward direction it will also not be damaged in the reverse direction unless you design for a freak accident.
Yes, like a power surge which could easily happen in any modern motherboard. This is why most case manufacturers include a $0.01 capacitor and a $0.01 diode to prevent back current ever even becoming a problem.
However, if the motherboard and/or case and/or PSU is poorly designed, then yes, the LED can break in the wrong orientation. I have seen it happen first hand.
Probobly not. Several manufacturers have tried to streamline it but it never sticks with the other manufacturers. If an open standard become popular then manufacturers will switch but no one will be the first to try because they want their own standard to be the leading one.
Kinda going offtopic now, but that all depends on:
a) How stupid greedy corporations are (See: Proprietary Nvidia technologies like GSync and DLSS vs “Open” AMD technologies like FreeSync and FSR)
b) How much interest there is to create a common standard
c) How much a single vendor dominates that particular hardware space
If the market is flooded with a dozen different competing RGB technologies, then yes, everyone will suffer. But eventually, the dust settles and a single RGB standard will show up. I hope that standard will be open but I’m not holding my breath.