A:AnswerIt has an M6 screw hole. You can’t use anything longer than a 10mm length. The TV is so thin, there isn’t enough depth for a longer screw.
By the way, I’ve mounted more than 20 Flat Panel units and almost all mount kits come with an assortment screws in assorted lengths.
A:AnswerYou can connect your DirecTV box to the TV with an HDMI cable.
Try the Power On feature, when enabled, the TV turns on displaying the last used input. To activate it, go Home > Settings > Display & Sounds > Power On and select Last Input.