Normally you power the external GPU (eGPU) from a normal pc power supply using the correct power connectors and the eGPU's data connection comes thru an adapter that connects to the laptops m.2 (pcie) slot or the wifi adapters' slot.
Normally you power the external GPU (eGPU) from a normal pc power supply using the correct power connectors and the eGPU's data connection comes thru an adapter that connects to the laptops m.2 (pcie) slot or the wifi adapters' slot.