Hello, what Firmware is installed in the product ? a) 4.80( ABQE.3 ) C0 b) 4.80( ABQE.2 ) C0 c) 4.80( ABQE.1 ) C0 Can we use the switch as a simple private-switch (wifi + printers) with no AV goal or do we have to purchase the lifetime licence ? Thanks.