A4-Tech 2D Mouse NWW-9 A4Tech Non-Wheel Wired Ball Mouse 520 DPI PS2 Connection (2/3 buttons) MS-A4-P-NWW9-BG

A4-Tech 2D Mouse NWW-9 A4Tech Non-Wheel Wired Ball Mouse 520 DPI PS2 Connection (2/3 buttons) Features: > High 520 DPI, 30% faster than any others. > Designed programmable third / middle button. > Provides Auto-Scroll function. > On-line Zoom function. > Reliable Opti-Mechanical technology. > Easy to install, just Plug-and-Play. > For IBM PC and compatible.