74 TroubleshootingCannot Connect to Computer Properly Printing Speed Is Slow / USB 2.0 Hi-Speed Connection Does Not Work “This device can perform faster” Message Is DisplayedCause ActionYour system environment is not fullycompatible with USB 2.0 Hi-Speed.If your system environment is not fully compatible with USB 2.0 Hi-Speed, themachine will operate at a lower speed provided under USB 1.1. In this case, themachine operates properly but printing speed may slow down due tocommunication speed.Check the following to ensure that your system environment supports USB 2.0Hi-Speed connection.z The USB port on your computer supports USB 2.0 Hi-Speed connection.z The USB cable, and the USB hub if you are using one, support USB 2.0 Hi-Speed connection.Be sure to use a certified USB 2.0 Hi-Speed cable. We recommend the cableto be no longer than around 10 feet / 3 meters.z The operating system of your computer supports USB 2.0 Hi-Speedconnection.Obtain and install the latest update for your computer.z The USB 2.0 Hi-Speed driver operates properly.Obtain the latest version of the USB 2.0 Hi-Speed driver compatible with yourhardware and install it on your computer.ImportantFor details on USB 2.0 Hi-Speed of your system environment, contact themanufacturer of your computer, USB cable, or USB hub.Cause ActionYour system environment is not fullycompatible with USB 2.0 Hi-Speed.Your system environment is not compatible with USB 2.0.See “Printing Speed Is Slow / USB 2.0 Hi-Speed Connection Does Not Work” onpage 74.
