Hi guys.  Recently bought a Western Digital Media Player (TV Live) which I guess many of you will be familiar with by now.  For those that haven't seen one, it's a small box that will play many types of media files through your TV.  An excellent gadget, actually, highly recommended.

My question: The box has two USB ports for connecting memory sticks, USB hard drives etc.  Rather than use a small memory stick to feed the player, I bought a USB enclosure to hold a spare 80GB 2.5" laptop drive and this works well; the drive holds many movies, and is recognised by the media player within a few seconds of startup.

The hard drive enclosure connects to the media player via a USB Male to Male (A to A) cable.  This type of cable has the typical USB flat spade-shape connector on BOTH ends.  But here's the rub; I've found that the A to A cable won't work if I try and extend it with a regular USB extension cable.  In other words, if I try to insert the extension cable anywhere in the loop between the the hard drive enclosure and the Media Player, it doesn't work, there's no signal.

Which leads me to believe that perhaps all USB cables are NOT wired the same way.  Any able to comment on this?