Samsung PN51E6500EFXZA - Manual (Page 218)

Sets the default options for the
keyboard language and type.
–
Keyboard Language : Set a language
for your keyboard.
–
Keyboard Type : Set the type of
keyboard you're using to enter text .
–
Switch Input Language : Select a key
sequence that switches the input
language.
●
Mouse Settings
Lets you use a USB or Bluetooth mouse