The new "Leaf" range of USB to CAN interfaces have been designed to meet the requirements of R&D, service & test engineers that require access to newly developed or existing CAN busses from a PC.
Kvaser Leaf "Light" is a low cost version that will provide basic functionality for standard office environments.
Kvaser Leaf "Semi-Pro" provides higher messaging rates, wide temperature range & multi-channel synchronisation
Kvaser Leaf "Professional" is the highest performance product in the range, ideal for all important CAN applications

Please see the Documents section for more detailed information.