The white box contains fasteners, various small things and a manual:

It also contains two connectors to attach the pump and the fan to ordinary Molex outputs of your power supply.

This may come in handy if the connectors on the mainboard are all already occupied. A special kit consisting of a bracket and a knob is intended to put the fan speed control on the rear panel.

The fasteners are designed similarly, but none of the popular platforms is forgotten. You get fasteners for all existing platforms from AMD:

The plate for K8/K9 platforms is on top; the Socket A plate is at the bottom. There are more fasteners for Intel’s platforms. These are plates for the Xeon and Socket 478:

A plate for Socket LGA775 and a universal back-plate for all the above-described platforms, excepting the Xeon.