Bluetooth wireless technology is an international open standard for allowing intelligent devices to communicate with each other over short range wireless links. It allows any sort of electronic equipment - from computers and cell phones to keyboards and headphones - to make its own connections, without wires, cables or any direct action from a user.

A Bluetooth stack is software that refers to an implementation of the Bluetooth protocol stack. Widcomm was the first Bluetooth stack for the Windows operating system. The stack was initially developed by a company named Widcomm, which was acquired by Broadcom. The Microsoft Windows Bluetooth stack only supports external or integrated Bluetooth dongles attached through USB.

“This software is to add functions over the Microsoft Bluetooth software for Microsoft Windows Vista. So the version number of some of the software may not the same as the version number of this software. This package installs the software (Bluetooth with Enhanced Data Rate Software II) to enable the ThinkPad Bluetooth with Enhanced Data Rate and the Thinkpad Bluetooth 2.1 with Enhanced Data Rate. However, some models do not support Blue...”