You might check to see how much power is supplied to each of the HD's usb ports. If the power delivered to the port is too much (or too little), the drive might not be recognized.
Media boxes vary, so outside of having people post which media box works for them - and even that's pretty informal - there's no way for me to know which boxes work and which don't.
I'm used to connect a LaCie LaCinema Premier media box to my Samsung LE40B650 via USB cable and it goes without any problem; the device is recognised and I can read the stored files via the Samsung media player interface.
I bought few days ago a new external HD (still a LaCie Hard Disk, Design by Neil Poulton) and unfortunately my Samsung doesn't recognise it as USB source; it's simply ignored as soon as I'm connecting the USB cable or I ask to my Samsung to search for any new device.
Both the media box and the external HD have same capacity (1Tb) and interface (USB 2.0 high speed) so I'm just wondering what's wrong in my HD and if I can fix it (I guess this is not a TV issue, isn't it ?)
Thank you for anybody who will help me.