[. . . ] [. . . ] Using the latest optical lens technology from Genius, Ergo 300 can work on many special surfaces like photos, magazines, and most marble and tile surfaces. For more convenience and efficiency, the 4- way scroll function lets you navigate horizontally or vertically through documents or websites. Ergo 300, with the above advantages, will exceed your imagination once you plug it in. Key Features Ergonomic design and comfortable; better alternative to notebook touchpad 800dpi optical sensor for superior precise tracking; no cleaning required 4D Scrolling function---Up/Down/Left/Right scrolling New lens technology works reliably on glossy or uneven surfaces System Requirements IBM PC Pentium 233 compatible or higher Windows 2003/XP/Me/2000/98SE Mac OS X or later Available USB Available PS/2 port (for USB & PS/2 Version) CD/DVD-ROM drive for software installation Tilt Wheel for vertical and horizontal scrolling Package Contents Ergo 300 Mouse USB to PS/2 adapter (for USB & PS/2 Version) ScrollMate CD driver U e s u e sr gi 'd Shipping Information PCS/CTN : 40 PCS CUFT/CTN : 4. 14 CUFT PCS/20' container :9640 PCS New optical lens technology lets you use it on many surfaces like: Dates Available Sample :May. , 2005 Mass Production : May, 2005 12 / Ergo 300 4-way Scroll 800dpi Mini Optical Mouse Comparison Category Model Name Traveler Traveler iRIS Mini Optical Mouse NetScroll + Mini Netscroll + Mini NetScroll + Mini Traverler Pro Mini Navigator Mini Tracer Ergo 300 Package Interface Support USB USB + PS/2 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes System Support Win 2003/XP/Me/2000/98SE Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Mac OS Specifications Number of Buttons Optical Resolution(dpi) 4-Way Scrolling Retractable Cable Light Extra Faceplate Leading Lens Technology 3 400 - 3 400 Yes(iRIS) - 3 800 Yes - 3 800 Yes Yes 3 800 Yes(blue) - 3 800 Yes Yes Yes - - - - - Ergonomic Design 22 / [. . . ] [. . . ]