Here's our Hardware Tip for.. July 12, 2002
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USB 2.0--Part 3 of 5
USB 2.0 controller chips will be backward compatible with the USB 1.1 specification--meaning that current USB peripherals you purchase now will still operate on USB 2.0-capable systems. Thus, you won't be wasting money if you purchase a USB 1.1 interface device now.

However, you should keep in mind that USB 2.0 products can operate at data transfer rates 40 times faster than USB 1.1 devices. For low-bandwidth devices like mice and keyboards, the improved performance of USB 2.0 will make no noticeable difference. But with high-bandwidth devices like DV cameras, you will see a significant difference.