What Macintosh computers are compatible with the Apple USB modem? You can use an Apple USB modem with any Mac computer capable of running Mac OS X 10.4.3 or later. You MUST have Mac OS X 10.4.3 or later installed in order to use this modem. If you Macintosh is running an earlier version of Mac OS X 10.4, upgrade your computer's operating system using Apple Downloads or using Automatic Software Update . Can I use the Apple USB modem if my Macintosh already has an internal modem? Yes, but you can only use one modem at a time. Make sure
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