New Original Logitech C270 C270I HD Webcam 720p HD Built-in Microphone Web Camera USB2.0 Free drive Webcam for PC Chat Camera - AliExpress Computer & Office
Manually Focusable Logitech C270
Amazon.com: Logitech C270 HD 720p Webcam Bundle with USB Hub and Ring Light (3 Items) : Electronics
Manual Focus Hack for the Logitech C270 Webcam including demo
Logitech C270
Modifying Logitech C920 for PCB inspection and soldering – techtravels.org