[. . . ] USB_Troubleshoot. pdf Troubleshooting tips for Microtek USB (Universal Serial Bus) Interface (iMac) Q1: Choose the right driver A1: Microtek USB-based scanners run on the Apple iMac and on the new PowerMac G3 systems. [. . . ] Installing the iMac driver on a non-iMac system will have adverse the effects on your scanning operation. Q2: Scanner not found A2: Make sure you have correctly connected the USB cable, then restart your scanner. Q3: Keyboard inactive or mouse hang-up A3: Reconnect the USB cable, then restart your scanner and iMac. If the keyboard or mouse still cannot function, power off iMac and the scanner, connect the USB cable to another USB port. [. . . ] Q4: Device checkup A4:To verify whether your scanner has been detected by iMac, try using Apple System Profiler 2. 0 (or later) to see if the scanner is correctly detected on the USB port. [. . . ]