Includes drivers for Windows XP, Pro, and XP Home for programming all 5 buttons. The driver is not required. The VerticalMouse 4 still has basic functionality without it. Freeware driver for Windows Vista & Windows 7 (32 and 64 bit), XP x64, 2003, and 2000 at www.highrez.co.uk/downloads/XMouseButtonControl.htm Although it is freeware, please make a donation to the author if you like it. (Evoluent has no business relationship with this vendor.)
USB only. Not compatible with PS2.
Button in OS 9 without a driver. 5 buttons in OS X 10.4.5 without a driver: left click (top), right click (middle), expose’ (bottom), show desktop (wheel), select window (thumb). www.usboverdrive.com sells a universal Mac driver that enables button programming. (Evoluent has no business relationship with this vendor.)
3 buttons without a driver. Wheel button is middle click.
5 buttons in XFree 4.0.1 or higher and Knoppix Linux 3.9 or higher without a driver: left click (top), right click (middle), middle click (bottom), middle click (wheel), right click (thumb).
Resolution: 2600 dpi true optical resolution