Griffin PowerMate Multimedia Control Knob for USB Computers, Black - Assignable USB multimedia controller
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<div style="text-align:left"><b>[Product Information]</b></br><ul><li class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your " id="replacementPartsFitmentBullet"><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a class="a-link-normal hsx-rpp-fitment-focus" href="#">Enter your model number</a><span>to make sure this fits.</span></span></span></li><li><span class="a-list-item"> 
							Assignable Controller that you can program to do anything you want, in any application.
							
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							Comes preset to work with iMovie and GarageBand
							
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							PowerMate 3.0 requires Mac OS 10.6 or greater.
							
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							Compatible with: Windows Vista, Windows XP, Mac OS X 10.4 (Tiger), Mac OS X 10.5 (Leopard), Mac OS X 10.6 (Snow Leopard)
							
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