The typical ethernet connector is those seen on the average board. The type of cable seen for some of the wireless routers is a larger plug seen there. Lan plugs are much closer in size to the standard plug seen on your home phone or usual nik card for pc.
To see the contrast between the two types the image here is an RJ-45 adapter with the left side being familiar with that seen on the rear of a board or on an expansion card. The green type on the right is what plugs into some of the wireless routers.
This will simplify things quite a bit so we all end up on the same page instead of pulling hair!