Samsung UE50ES6300U E-Manual page 245

USB.
N
If you select a source other than TV
or USB, you must:
ΠHave a cable or satellite set-top
box attached to that source
ΠSet the set-top box to the
channel you want to watch when
the TV goes on
ΠLeave the set-top box turned on.
N
When you select a source other than
TV or USB, the Aerial and Channel