dont really understand the question fully tbh
but if you mean can you get a external usb caddy to work off the usb ports on a tv, the answer is yes if it's a powered usb caddy, if not then get a 2.5" Mobile Hard Drive External USB2.0 one which is powered straight off the usb, getting a 3.0 one maybe a waste as your device may not use the extra speed etc, and also dont go to high with size either as not all will be seen.
you could always use a media box, small usb HD TV Digital Mini Media Player - 1080p - 5.1 Surround Sound - MKV - Play any file from USB HDDs/Flashdrives/Memory Cards - Surround Sound Out 5.1 etc
cheap and easy to setup and would use the drive you have for £20