Wifi router is at one end of the house with the internet modem. We have one ethernet cable running to the other end of the house to an unmanaged switch. We have 120mbs at the end of that ethernet cable. But once connected to the unmanaged switch, speed drops down to around 30mbs. We have the following unmanaged switch ( https://www.amazon.ca/gp/product/B0034CL3MA/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1).
Why is that?
Why is that?