... apply to hotel ,supermarket ,shopping mall, metro , show room .with CF / SD Card 42 Inch Advertise player Size42 InchPanel Resolution1366 ... one way is to use AV distributor and AV lines with AV interface to connect the LCD AD , the other is wireless synchronization ... for MPEG2,it needs 400MCF Card Protect FunctionWith Safety Protection Lock, it prevent replacing CF card at randomly USB Interface ...