Usage Of Filter By Keys in Ms-Excel

ALT+DOWN ARROW
In the cell that contains the drop-down arrow, displays the AutoFilter list for the current column.
DOWN ARROW
Selects the next item in the AutoFilter list.
UP ARROW
Selects the previous item in the AutoFilter list.
ALT+UP ARROW
Closes the AutoFilter list for the current column.
HOME
Selects the first item (All) in the AutoFilter list.
END
Selects the last item in the AutoFilter list.
ENTER
Filters the list based on the item selected from the AutoFilter list.