I have deduced his switch is one RB260GSP and probably still have version 1.14
Like all the others (rightly) unanswered, or (rightly) answered like "search first",
do not provide any clue of what machine is or what RouterOS (SwOS in this case) is installed.
Very bad habit.
His switch have SwOS and ask where see uptime on GUI not WinBox.
WinBox can not control SwOS.
I'm Italian, not English. Sorry for my imperfect grammar.