TOPIC
This article contains answers to some frequently asked questions concerning Universal Serial Bus (USB) featured on iMac and other Power Macintosh computers. Questions covered in this document include the following:
DISCUSSION
Are there any USB Products Available from Third-Party Developers? Yes. To read more about USB products, note the following URLs: http://www.macsoftware.apple.com http://www.apple.com/usb As you shop for USB devices, you're likely to find many that will work with the Mac OS. If you want to find devices that have been specifically tested for compatibility with Mac OS, look for products that have both a USB logo and the Mac OS logo. If a USB product you're interested in has the USB logo only , check with the vendor manufacturing the product and ask about Mac OS compatibility before making your purchase. Are there any USB modems available from third parties? Yes. Several companies sell USB-based modems for iMac. And, don't forget, iMac also includes a built-in 56K fax/data modem that supports both K56flex and V.90 standards. Note: The built-in modem can download at up to 56Kbps, but actual download speeds vary with line conditions and your Internet service provider's modem capabilities. Note, too, that FCC regulations limit ISP transmission speeds to 53 Kbps in the United States. What kinds of error messages regarding USB devices might I see? What can I do about them? If you encounter any difficulties with USB devices, they will be easily resolved. There are three kinds of error messages or dialog boxes Mac OS may use to alert you to a USB issue. These include: Not Enough Power to Function Mac OS will generate a Not Enough Power to Function message if: What to do? If you're using a self-powered device, check to see if the device is plugged into an electrical outlet. If not, try connecting the device directly to your iMac or to a port on a self-powered hub. If you're connecting the USB device to a self-powered hub, make sure the hub is plugged into an electrical outlet. Not Enough Power For All Functions Mac OS will generate a Not Enough Power for All Functions message if there is enough power to supply some but not all of the functionality the device is designed to provide. What to do? As above, see if the USB device has its own power cord and, if it does, plug it into an electrical outlet. Otherwise, try plugging the cable for the USB device directly into to your iMac or to an available port on a self-powered hub. If you're connecting the USB device to a self-powered hub, make sure the hub is plugged into an electrical outlet. No Driver Found Mac OS will generate a No Driver Found message if a driver for the USB device you just connected cannot be found in the System Folder. If you get this message, you may have forgotten to install the software that came with the device, or you may have put the device driver (that is, the software that allows iMac to recognize and communicate with the USB device) in the wrong place in your System Folder. What to do? Reinstall the software driver from the CD-ROM that came with the product, or download and install the driver from the product vendor's Web or FTP site on the Internet. Other USB FAQ's can be found in the following articles: |
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| Document Information | |
| Product Area: | iMac |
| Category: | USB |
| Sub Category: | General Topics |
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