Specific: Left button: Common operation Right button: Special function menu Trackball: Thumb roll the trackball to control the cursor Scroll wheel: back and forward Cable Length: Approx. 6.56 ft / 2m Resolution DPI: 400/600/800/1000 Compatible with: Windows 98/ 2000 / XP / VISTA / win 7/ Linux / Unix / Mac OS How to Use: Put your index or middle finger into the hole of this mouse. Control the track ball for moving cursor and press the right and left button with your thumb When using "Drag and Go" function, press the button in the hole of the mouse that has the same function as the left button of the common mouse Use the left button to lock the screen and then you can control the track ball to roll your screen freely Package Included: 1 X Wired trackball mouse
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