Comment on Will there be power issues if I plug an unpowered USB hub into a powered on or vice versa
jjagaimo@lemmy.ca 11 months agoThat is not how devices like this work; plugging a 5V 3A device into a 5V 1A port means you can only pull 1A. Going beyond that will either trip a fuse on the board or cause the port to shut off, or potentially keep working with diminished voltage.
If it is USB PD or QC then the devices may negotiate a higher voltage, but for standard hubs like these it’s most likely to just use a USB A port and 5V.
NeoNachtwaechter@lemmy.world 11 months ago
I have seen dead hubs, but I have never seen one with such fuses.
jjagaimo@lemmy.ca 11 months ago
Many have PTC or poly fuses that can self reset, so a port may briefly stop working. Some are built into the hub ICs or are in the form of a surface mount resistor