Is there something you put into the USB which then derives the heat from the laptop via the USB port?
No. The heat does not transfer to the USB port. That would be very damaging to the laptop. There are extra vents that you put under the laptop like a pad
No, because the heat can't be dissipated via the USB port. But you could buy a so-called cooling pad for your laptop.
No, that would be pretty pointless. They should not be that warm.
Well, these cooling pads blow mainly on the plastic. It's not that effective now.
Feel the plastic. Is warm / hot. Has accordingly very well a benefit.