Veho’s modern website has shifted focus to audio and newer peripherals. The original VMS-004 is a legacy product, but drivers may still be available via their support legacy portal. As of late 2024, the direct link structure has changed. Your best bet is to navigate to Veho World (vehoworld.com) → Support → Legacy Products → USB Microscopes. Look for a file typically named VMS-004_Drivers_v1.1.zip or a similar variant.
If you already have a generic viewer like VLC or OBS, you just need the direct show driver.
Launch the software. If you see a live feed, you have succeeded.
The VMS-004 is a re-branded generic microscope. The same software works for dozens of models.
If you cannot get the Veho software to work, you can use third-party camera software that supports USB video devices: