To use the (models: LFH-3500, LFH-3504, LFH-3508, or SMP-4000 series) on Windows 7, you need the correct drivers and dictation software. Philips has discontinued direct support for Windows 7, but legacy drivers still work.

To ensure the driver installs correctly without conflicts, follow these steps:

Complete the standard installation prompts. Windows 7 may ask for permission to install "Philips Speech Processing" hardware; click Install or Yes .