USB 1.0 vs. 2.0 cables

hi jean,
normally when you plug it in it tells you by the means of the small icon dear;-)

the only difference between the cable is that usb2 cable always comes shielded, and for usb1 it was optional.
a usb2 device can use a usb1 cable and damn all difference.
if you plug a usb2 device into a usb1 PORT, then you will notice a difference, the usb2 device will transfer at usb1 speeds.
if you plug a usb1 device into a usb1 PORT, the device will still run at same speed.
again, the whole idea of a usb2 cable is that the inner cables are shielded from external interferance, and you would need a fair bit of electrical intereferance for it to affect the transfer speeds noticably.