Bluetooth radio drivers that are included in Windows XP SP2

Device Name
ALPS Integrated Bluetooth Device
Alps Bluetooth USB Adapter
BCM2033 Bluetooth 2.4 GHz Single Chip Transceiver
Belkin Bluetooth Adapter
Bluetooth USB Adapter (BT-51x serial)
Blutonium BCM2035 Bluetooth 2.4 GHz Single Chip Transceiver
Brain Boxes USB Bluetooth Adapter BL-554
CSR Nanosira
CSR Nanosira WHQL Reference Radio
CSR Nanosira-Multimedia
CSR Nanosira-Multimedia WHQL Reference Radio
Dell TrueMobile Bluetooth Module
Dell Wireless 350 Bluetooth Module
FIC Bluetooth Wireless Adapter
GVC Bluetooth Wireless Adapter
Generic Bluetooth Radio
HP USB BT Transceiver [1.2]
IBM Integrated Bluetooth II
IBM Integrated Bluetooth III
Microsoft Wireless Transceiver for Bluetooth
Microsoft Wireless Transceiver for Bluetooth 2.0
Motion Computing USB Bluetooth Device
Silicon Wave Bluetooth Wireless Adapter
Sony Bluetooth USB Adapter
TDK Bluetooth USB Adapter
TDK Bluetooth USB Adaptor
TOSHIBA Bluetooth Adapter
TOSHIBA Integrated Bluetooth
TOSHIBA Integrated Bluetooth 2
TOSHIBA Integrated Bluetooth 3
USB Bluetooth Device
USB Bluetooth Wireless Adapter
Zeevo Bluetooth Solution

ref: List of Bluetooth radio drivers that are included in Windows XP SP2