Trust GMS-505, Right-hand, Optical, USB Type-A, 4000 DPI, Black, Orange Trust GMS-505. Form factor: Right-hand. Movement detection technology: Optical, Device interface: USB Type-A, Movement resolution: 4000 DPI, Buttons type: Pressed buttons, Buttons quantity: 11, Scroll type: Wheel. Power source: Cable. Product colour: Black, Orange