The Toshiba stack is also available with certain non-OEM Bluetooth accessories such as USB Bluetooth dongles and PCMCIA cards from various vendors. A non-disclosure agreement must be signed to obtain the API. Toshiba licenses their stack to other original equipment manufacturers (OEM) and has shipped with some Fujitsu Siemens, ASUS, Dell and Sony laptops. Toshiba has created its own Bluetooth stack for use on Microsoft Windows. The Microsoft Windows Bluetooth stack only supports external or integrated Bluetooth dongles attached through USB. The stack was initially developed by a company named Widcomm, which was acquired by Broadcom. Widcomm was the first Bluetooth stack for the Windows operating system.
