In "'Wiren Board 5.6"' Debug UART is output on the comb between FW and IR connectors.
Debug UART "'Wiren Board 5.3"' displayed on the sidebar.
In "'Wiren Board 4"' Debug UART are on the side panel next to the microSD and microSIM card slots.
In "'Wiren Board Smart Home rev 3.5"' Debug UART is output to uext1 connector and separately to the comb (next to audio output, see diagram). For Debug UART used legs 2,3,4.
" 'Wiren Board 2.8"' Debug UART is connected to UEXT1 connector (black connector with ten pins on the long side of the Board).