Nikon D3500 Camra I am unable to locate a port for supply of external power to the camera. It was mentioned that this port is on the right edge of the battery compartment at bottom of the camera. I am able to locate this compartment. But I don't see any power input point there. Please guide.
The D3500 doesn't have external power supply capability.
What you may be looking for is the small port that you can open when using a dummy battery, located on the outside edge of the battery compartment door.
To power it, you need the dummy battery insert - EP-5A Power Supply Connector and the power supply itself - EH-5a AC Adapter
Third parties probably make copies for ⅓ the price, but will have no Nikon guarantee.