Samsung Tv, staff have no product knowledge

i recently purchased a Samsung 40" smart TV, model UA40J5200AKXXA. i have been having a problem whereby on conecting my 1terabyte hard drive to the TV, it will play the hard drive for about 10 Minutes then then cut off. keep in mind that the model before this model worked perfectly with a 1 Terabyte. So i went to the Samsung service department ( TM Services ) and the techinican explained that because the USB port is a 0.5 amp it will NOT play the hard drive, but a TV with a 1 amp port WILL play the hard drive. right!

so i left the service centre to see what my options are, as i prefer to have a model that will play a 1 terabyte. I then see that there is a 43" smart TV, so i start enquiring from Samsung as to what ampage is the port. I first call TM services but couldnt get any help as everyone was busy. so i then call Samsung service centre in Nandi Drive, the agent says that the 40" should play a 1 terabyte. So by now i am confused! so i ask him what is the ampage on the 43", he says he doesnt know. So i then call 086 726 786 ( Samsung call centre ) and ask her about the 40" and the 43", her response was sometimes a 1 terabyte will play and sometimes it wont ( talk about playing it safe! ).

i was shocked that i got so many different answers from Technicians and call centre agents, and here i am still without answer as to whether or not these TV's are able to handle a 1 terabyte! it is a simple question. i was shocked that Samsung staff ( including the technicians ) had such poor product Knowledge. so before i purchase a R7000 TV, i urge Samsung to please give me some clarity as to which TV can and cannot support a 1 terabyte hard drive. this is especially after i owned a 40" previously and i had no problems playing my 1 terabyte.