Reference: QuickCam 11 Release Notes and Version History
Official reference.
Reference: Camera product name and part number matrix
Official reference.
Reference: Downloading Latest Video Software
Official reference.
Reference: Identifying camera part numbers and model numbers
Official reference.
Reference: Identifying camera part numbers and model numbers (Copy of Answer 3452)
Official reference.
Reference: QuickCam - Windows support matrix
Official reference.
Reference: Window Vista Gadgets and Logitech
Official reference.
QuickCam for Notebooks FAQ
Official QuickCam for Notebooks Fequently Asked Questions
Logitech Homepage
Official Company Homepage