Others here can probably provide more specific information, but my suggestion is to go www.targus.com and type in Empower - the thing you need to check is whether there is a tip for your machine. It's based on the manufacturer and model number. The adapter/converter uses tips to connect to different types of machines - you may need to purchase it separate from the cord, or it might be part of the base kit.

They do not offer a tip for my portable DVD player so that is not an option for me (my battery lasts a little more than 4 hours so its enough to keep me occupied for a movie or two). I do use the cord for my laptop though and its great to be able to "plug" in on the plane. FYI, the plug also works in the cigarette lighter of most cars (at least in the US).

Good Luck.