The original poster is asking about a different cable--the one use to connect the camera to the PC (for image transfer) and for charging the battery in-camera. That cable is a USB to, from what I can tell, a SONY proprietary connector (ugh!). You can find these cables on Amazon or eBay if you do a search for "HX9V USB cable". They should cost less that 10 dollars.
The second poster is pointing out a different cable, the one used for displaying images on a TV.