It fits 23.2mm lens hole. 2 adapters are 23.2mm to 30mm and 23.2mm to 30.5mm. Software is Windows 7 (32/64bit) OS.The item "OMAX 10.0MP Microscope USB Digital Camera with Software, A35100U, 10MP" is in sale since Monday, December 28, 2020. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical/Lab Equipment Attachments & Accessories\Microscope Parts & Accessories\Microscope Camera & Lens Adapters". The seller is "system-tek" and is located in Brea, California. This item can be shipped worldwide.