Ques. I Want to buy a external hard disk & pendrive, Are only sony external hard disk and sony pendrives compatible with sony bravia tv?
Ans. Any popular brand of hard disks and pen drives can be used with a Sony bravia TVs. Although the video formats readable by Sony TVs is lesser than other brands like Samsung etc.
You can check for the compatible formats here: http://www.sony.co.in/support/compatibility/461529
Formats marked X are incompatible.