The menu above is not from the B593 router. I have a B593 router with external antennas and there is no selection for external or internal antennas.
Also the setting for manual selection of network to not to switch back to automatic selection of network does not work as expected. When the signal is lost the router swith to roaming network even when i selected to stay on the manually registed network. This is very frustrating.

Below is the menu on my B593 router, Hardware version B, Software version V100R001C1064SP050
