Update firmware If your USB device's firmware is out-of-date, you might see issues, particularly after system updates. Check your device manufacturer's site or VersionTracker for any new revisions. The reasons why this workaround is so effective are varied, but one is that re-installing the combination update can replace components - including those related to USB functionality - that were damaged during the initial update process (the combo update is larger in size than the version-to-version or "delta" update and makes any incremental release current ) Re-apply the Mac OS X combo updater And oldie but goodie: navigate to Apple's download page, then retrieve apply the combination updater that matches your system (e.g. USB Prober You might try running USB Prober. It is located in /Developer/Applications/Utilities, provided you have installed the Xcode developer tools. (These are probably present on your Tiger installer DVD, if you have one, but the best way to obtain them, if you have a broadband Internet connection, is to go to, join the Apple Developer Connection as a free online member, and log in to obtain the most recent Xcode tools installer as a 1GB download.) Apparently, just running USB Prober does some sort of USB reset that can "wake up" unresponsive USB ports.Ĭlearing caches Use a tool like Cocktail, OnyX, MacPilot, or Tiger Cache Cleaner to perform a cache cleaning on your Mac.
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