Answer:
If manufacturers follow the USB-IF's recommendations, it shouldn't be difficult to tell the different USB versions apart from one another. But when reading the specifications for a USB product, look for the version numbers or data transfer rates to make sure you're getting what you pay for. Low-power peripherals, such as keyboards and mice, work fine using USB (that is, version 1.0 or 1.1). Devices that require faster data transfer rates, however, such as digital camcorders, should use Hi-Speed USB.
Before attaching a USB device to your computer, you should know what speeds its USB ports use. USB ports usually have a small icon beside them that looks like a three-pronged fork; a plus sign (+) beside the icon indicates Hi-Speed USB.
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