I have two Orico USB hubs, the powered one has four 3.0 ports, and the unpowered one has one 3.0 port and five 2.0 ports. If I plug the powered hub into the pc then chain the unpowered one into it, will the unpowered hub run into power issues if I plug high-power-consuming devices into it? And does it make any difference if I switch the hubs order?
That 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.
I have seen dead hubs, but I have never seen one with such fuses.
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