▪ 1 AA battery. Good for 3-5 months of average use.
▪ Downloadable driver for Windows XP, 7, 8 and 10 in 32/64 bit for programming all 6 buttons. The driver is not required. The VerticalMouse 4 still has basic functionality without it.
▪ Freeware driver for other Windows versions at www.highrez.co.uk/downloads/XMouseButtonControl.htm (Evoluent has no business relationship with this vendor.)
▪ USB only; not compatible with PS2 adapters. May be compatible with some USB KVM switches but it is not guaranteed.
▪ Downloadable driver for programming 6 buttons. The driver is not required. VerticalMouse 4 still has basic functionality if the driver is not installed.
▪ Basic functionality without a driver.
▪ Compatibility unknown