It's ironic that this came with a warning about the length of USB cables which basically meant to say "Don't use this product" It should be atleast a foot shorter to avoid exceeding the 10 foot maximum described in their warning tag, since all usb devices come with atleast a foot of cable built in (that this extension plugs into) but no matter, I've used it for over a month on a USB webcam with a 6 foot cable built into it which I plugged into this cord and haven't had any problems yet.