I read Logitech's data page on this cam but it does not mention anything about Mac compatible although the info I saw from some Mac people suggested that that might be some silent agreement between them and the PC people.....
Here's the article I read under:
http://www.ecamm.com/mac/ichatusbcam/configs.html scrolled down to the Logitech data and found this under the QuickCam Pro for Notebooks:
Logitech QuickCam for NoteBooks PRO (New Version)
Important Note: Logitech Compatibility Information
The following Logitech QuickCams are currently available in two versions. Only the newer version is Mac-compatible (UVC compliant) (Unless otherwise noted.).
* QuickCam for NoteBooks PRO
* QuickCam Orbit MP/Sphere
* QuickCam PRO 5000
* QuickCam Ultra Vision
* QuickCam Fusion
Identifying the newer revision cameras:
The new models are labeled with the "Works with Windows Vista" logo, and also feature "RightLight 2" as one of the features.
Part Number (P/N): The compatible model/part numbers are listed on our camera guide. Unfortunately, the part number can only be found by opening the box.
Logitech provides the following table showing the new vs. old camera models. The cameras marked as "UVC Supt" are Mac-compatible.
Model: V-UAR38 861303-0000)
PID: 0x08CB Built-in Driver (Requires Mac OS X 10.4.3 or higher)
iUSBCam is not required for Mac OS X 10.4.9 or higher