Canon iP4700 SERIES On-Screen Manual page 364

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Advanced Guide Troubleshooting
Cannot Connect to Computer Properly
Printing Speed Is Slow/Hi-Speed USB Connection Does Not Work/
can perform faster" Message Is Displayed
If your system environment is not fully compatible with Hi-Speed USB, the printer will operate at a
lower speed provided under USB 1.1. In this case, the printer operates properly but printing speed
may slow down due to communication speed.
Check: Check the following to make sure that your system environment supports
Hi-Speed USB connection.
Does the USB port on your computer support Hi-Speed USB connection?
Do the USB cable, and the USB hub if you are using one, support Hi-Speed USB
connection?
Be sure to use a certified Hi-Speed USB cable. We recommend that the cable is no
longer than around 10 feet / 3 meters.
Does the operating system of your computer support Hi-Speed USB connection?
Obtain and install the latest update for your computer.
Does the Hi-Speed USB driver operate properly?
Obtain the latest version of the Hi-Speed USB driver compatible with your hardware
and reinstall it on your computer.
Important
For details on Hi-Speed USB of your system environment, contact the manufacturer of
your computer, USB cable, or USB hub.
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