Using Your Computer 39
Using Multiple USB Devices at the Same Time
Your PowerBook has two USB ports. If you want to use more than one device on the same
USB port, purchase a USB hub. The USB hub connects to an open port on your computer
and provides additional USB ports (usually four or seven).
For More Information on USB
Additional information on USB is available in Mac Help (see page 36). Choose Mac Help from
the Help menu and search for USB. You can also nd information on Apples USB Web site
at www.apple.com/usb
For information on USB devices available for your computer, check the Macintosh Products
Guide at www.apple.com/guide
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USB hub