Those who are coordinated enough to manage a trackball will appreciate the Kensington SlimBlade. Navigation mode controls scrolling and cursor, while media mode controls volume, play/pause, forward/back, stop and track selection. Finally, view mode pans and zooms in and out and a heads-up display lets you know which mode you are currently using. The trackball is both Mac and PC compatible, connects by USB 2.0 and you can pre-order now for $129.99.
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