A4-TECH A4TMYS46059 Mouse A4TECH OP-760 80036400 Product Description: A4Tech OP-760 - mouse - PS/2, USB - black Device Type: Mouse Connectivity Technology: Wired - PS/2, USB Colour: Black Dimensions (WxDxH): 5.8 cm x 11.6 cm x 3.4 cm Movement Detection Technology: Optical Buttons Qty: 3 Movement Resolution: 1000 dpi Features: Scrolling wheel (4-way) Cable Length: 1.5 m OS Required: Microsoft Windows XP / Vista / 7 / 8 / 8.1 / 10