L009UiGS-RM mode button?

Hello,

Anyone have a clue what’s this side MODE button on the L009? There’s no mention in the user guide or elsewhere: https://help.mikrotik.com/docs/display/UM/L009UiGS-RM#L009UiGSRM-Buttonsandjumpers

Photo 4: https://mikrotik.com/product/l009uigs_rm#fndtn-gallery

What’s with the search?
https://wiki.mikrotik.com/wiki/Manual:RouterBOARD_settings#Mode_and_Reset_buttons

Search is overrated … :confused: