A USB 1 cable is not rated to run faster than the 13mhz they were designed for. While it may work faster it is likely to have problems with data errors and reliability if you try and run it at the full USB 2 speed.
They pretty much stopped making USB 1 cables when USB 2 came out. Stores would love to get rid of old stock.
Is there a difference between a USB-1 cable and a USB-2 cable? I'm getting conflicting reports from local stores.