Logitech C505 driver is compatible for Microsoft Windows and Macintosh PCs. It helps those of you who want to connect the Logitech C505 HD webcam to a computer and adjust webcam settings for streaming, meeting or other purposes using Logitech webcam software. So the first thing you need to do is download the driver and software package for the C505 and then install the software on your PC.
Logitech C505 Driver and Software Package

Please download the compatible drivers and software package for your PC below:
Supported Windows Operating Systems
OS Compability: Windows 10 (32-bit), Windows 10 (64-bit), Windows 8 (32-bit), Windows 8 (64-bit), Windows 7 (32-bit), Windows 7 (64-bit).
Software Package
Logi Camera Settings and Logitech Capture.
Supported Macintosh Operating Systems
OS Compability: mac OS X 10.12, mac OS X 10.13, macOS X 10.14 (Mojave), macOS X 10.15 (Catalina), macOS X 11.0 (Big Sur).
Software Packages:
Logitech Camera Settings and Logitech Capture.