Apple G4 17-inch manual Using Multiple USB Devices at the Same Time, For More Information on USB

Using Multiple USB Devices at the Same Time

You can purchase a USB hub to connect multiple USB devices to your computer. The USB hub connects to an open USB port on your computer and provides additional USB ports (usually four or seven). Hi-Speed hubs can support USB 2.0 Hi-Speed devices as well as USB 1.1 compatible devices. USB 1.1 hubs don’t allow Hi-Speed USB devices to operate at their maximum data speed. Most USB hubs have a power adapter and should be plugged into an outlet.

Note: If you are using a chain of USB devices and hubs, some USB devices may not work when connected through a combination of USB 2.0 Hi-Speed hubs and USB 1.1 full-speed or low-speed hubs. For example, you may not see an external USB hard disk on your desktop. To avoid this problem, do not connect USB devices with different speeds together. Connect your Hi-Speed hub directly to your computer and connect Hi-Speed devices to it. Connect a full-speed or low-speed hub to your computer directly and connect similar speed devices to it.

USB hub

For More Information on USB

Additional information on USB is available in Mac OS Help. Choose Help > Mac Help in the menu bar and search for “USB.”You can also find information on the Apple USB website at www.apple.com/usb.

For information on USB devices available for your computer, check the Macintosh Products Guide at www.apple.com/guide.

Chapter 3 Using Your Computer

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