my friendo used this Micro JST Mini Stecker 15cm Kabel 1.0 1.25 2.0 2.5 mm 2 - 12 Pin SH ZH PH XH
The USB port is always rated at 5V so 1.5A is 7.5w.
Maybe that port is 300ma at 24v? which works out to 7.2w
But it’s outputting 5v, isn’t it? Haven’t actually measured
If you bought a high density LED strip with 24 smd LEDs. Typical 5050 led pulls 60mA. Which at 5v would use 7.2watts.
If the power ic on the pcb is not designed for 7.2watts it will get hot.
If the ic is correct but not the tracks it will get hot.
If it was designed for 300mA it will probably get hot.
Pure speculation but that could be your problem.
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Well no. It’s exactly the opposite. It doesn’t get hot, even though im technically 5 times over the current rating.
However the usb port does get warm when connected to it, even though its rating is much higher.
Ok sorry for the misinformation.
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They say it can damage motherboard is that true?
The aftermarket LEDs? No they cant. I think they draw the same amount as the stock LED bar, very low power.
So the aliexpress let i can use to?
No. They are vastly different. The Bambu LED strip has 9 LEDs while the Juupine aftermarket strip has approx 182 LEDs.
yes but they are both super low power draw, LEDs dont take much to power them. Nothing is going to get damaged on the board, been running mine for many months with no problem.
But you can say they draw the same current with 20 times the amount of LEDs
so no damage on the board those Juupine?
What i meant to say is the voltage rating is the same, might draw more amps, but as its super tiny, its not a big deal.
If you insist i can measure it with my multimeter it you are that curious.
No damage to anything, they work fine. And Juupine is a good company, i use virtually all of their products and they are some of the best to come out of china. Their plates are better then OEM bambu. I trust them.
Got an answer from juupine the led strips they sell are 5 volt and 2.5 amps so more then the advice that Bambu labs gives.
Thats only 12.5w, pretty low. Whats the spec on the bambu LED strip? Cant find it anywhere.
I guess you can stick to what bambu recommends or be a bit more adventurous. I have a dual hot end heater mod at 96w with a CHT nozzle and dual AUX cooling fans and a bunch of other mods. None of those things are “recommended” by bambu. If you want to live within confines of what bambu recommends, i respect that. I prefer to push things a little for more performance. 12w is not big deal, but again if that is more then stock and you dont fell comfortable i get it.
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At AliExpress they didn’t know but 0.3 amp or 2.5 is a bit of difference. I am not technician but can count. And I know a lot of people use them but what on long terms
ill measure the stock one when i have a chance and let you know. might be a while as i have to disassemble the printer to get to the plug.
great looking forward to it
I have four AMS units and one sits on top of the Printer. I like the idea of adding the lights to the bottom of the AMS. I just ordered some strip lights that come with a switch/dimmer and a power supply. No need to risk damage to the printer by tapping into the light circuit. The 24v available on the back of an AMS is another option. Who here with multiple AMS units doesn’t have a spare 4-pin AMS cable? 
The specs on the strip light I got was 24v/5w but that was for the 16.5ft strip with something like 1800 LEDs. It’s got to be minuscule on a foot or two of the strip.