While originally designed for these platforms, the "driver" was usually part of the VAIO Smart Network utility or the laptop's internal Bluetooth stack rather than a separate mouse-specific file. SONY Black Bluetooth Laser Mouse VGP-BMS33/B - Newegg.com
: On older VAIO laptops, you may need the Sony VAIO Smart Network utility to physically enable the laptop's internal Bluetooth adapter before the mouse can be detected. How to Connect (Pairing) Sony Vaio Bluetooth Laser Mouse Vgp-bms33 Driver