At Mode; D Mode; S Mode (At); Mt Mode - Honda NC750XA Owner's Manual

Shifting Gears
AT MODE: In this mode the gears are shifted
automatically according to your riding
conditions.
And also using the shift up switch (+), shift
down switch (-), you can temporarily shift up
or down in AT MODE by using the shift
switch. These switches are convenient when
you want to temporarily down-shift in front
(P64)
of a curve, etc.
You can choose between two modes within
AT MODE: D mode and S mode.
D mode (AT): This is the standard mode
when AT MODE is selected. Select D mode
for regular operation and efficient fuel
economy.
60
S mode (AT): Select this mode while riding
in AT MODE when you need more power,
such as when overtaking, climbing hills,
pulling away.
S mode has three levels of adjustment.
MT MODE: MT MODE (6-speed manual
operation) You can choose between 6 gears
in this mode.