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Are you using a or a USB Bluetooth dongle ?
If you are restoring an old VAIO, the original driver (often bundled with the VAIO Smart Network Bluetooth Stack Sony Vaio Bluetooth Laser Mouse Vgp-bms33 Driver
Most modern Bluetooth stacks pair this mouse as a keyboard or a generic input device without enabling the "Mouse" flag.
If you are holding onto a VGP-BMS33, you do not need to worry about legacy driver archives or compatibility issues. Your computer will likely connect to it instantly. The key to a smooth experience is ensuring fresh batteries and a stable Bluetooth environment. It is a classic example of Sony's commitment to design that outlasted the need for its own software support. This public link is valid for 7 days
Right-click your VGP-BMS33 (or generic HID-compliant mouse) and select .
Driver not found / Unknown device:
and certain legacy download pages were retired in September 2020. For further support, check the Sony Personal Computer Support page third-party driver archive
Older Bluetooth devices like the VGP-BMS33 often run into power management conflicts on newer hardware. If your mouse disconnects frequently, try these fixes: 1. Disable Bluetooth Power Saving Can’t copy the link right now
Good news—the VGP-BMS33 is designed to be a Plug-and-Play (PnP) device. It uses standard Human Interface Device (HID) protocols.