Fully Programmable via laptop;Compatible with Windows 2000, ME, XP, and Vista. NEW innovative NOSbus 2-wire network interface for seamless integration with other Holley/NOS supported products. Easy to use graphical software. Free software and firmware updates updatable by the user, downloadable off i-net. Available with a Handheld controller with SD card slot and USB interface for quick changes in the staging lanes and data-logging without laptop in the vehicle. Available with a 3.5” color, touch screen LCD for the ultimate in programming and looks. (No laptop Required) 3.5” Color, touch screen LCD also features a SD card slot for saving configuration files and data-logging as well as a USB interface. Full data-logging capability for easy reviewing of past runs through laptop, handheld controller (SD card) or LCD touch screen (SD card). Ability to save configuration files for easy set-up at different tracks or for weather conditions. Handheld controller or LCD touch screen allows change.