The cables you listed in the post are in fact firewire (aka ieee1394, Dv cable, iLink) and not USB - see
Here &
Here and being JVC branded are likely to cost far more than you need to spend. Maplins etc should do a firewire cable for around £10. The chances are that they will also sell a PCI firewire card with a cable for about the same price.
The difference between the 2 cables is that one will have 4 pin to 4 pin connections and the other will have a 6 pin connection on one end. Most desktop PC's will have a 6 pin port and most laptops a 4 pin port. The camcorder always has a 4 pin port.
HTH,
Mark.