To handle heavy trucks (mostly Cummins, Caterpillar, Mercedes etc), the Nexiq is an good solution. However when you receive the package and if the driver is lost, then google and search a working driver is a good idea.
As you can see, the package contains all what you want incl. main unit, adapters, cables, USB cable and CD.
1pc x NEXIQ-2 usb-link main interface
1pc x 441013 OBD II Adapter
1pc x 444009 J1962 OBD II Adapter
1pc x 402048 6- and 9-pin Deutsch Adapter
1pc x 442022 Volvo 14-Pin Adapter
1pc x 442020 Volvo 8-Pin Adapter
1pc x 442021 Komatsu 12-pin Adapter
1pc x 448015 CAT 9-Pin Adapter
1pc x 441033 3-pin Deutsch Adapter(with male and female connector)
1pc x USB cable
4pc x CD