Modern laptops have a physical or electronic privacy shutter. If the light next to the camera is off, the shutter is closed. Press Fn + F10 (or the key with a camera icon).
While generic drivers provide standard video feeds, the manufacturer-specific driver (often branded as "Camera Assistant" or "Lenovo Settings" depending on the laptop OEM) provides additional functionality:
While specifications can vary slightly by the specific OEM implementation, the B4.09.24.1 standard configuration typically includes: usb camera b4.09.24.1
Cameras reporting B4.09.24.1 usually contain one of the following popular controller chips:
You will typically find this identifier on: Modern laptops have a physical or electronic privacy shutter
| Feature | USB Camera (B4.09.24.1) | Modern 4K Webcam | | :--- | :--- | :--- | | Typical Resolution | 640x480 (VGA) to 1920x1080 (30fps) | 3840x2160 (30fps) | | Sensor Size | 1/6" or 1/4" CMOS | 1/2.8" CMOS | | Autofocus | Fixed Focus (Manual twist ring) | Phase Detection / Laser AF | | Microphone | Onboard (Poor quality) | Dual Noise Cancelling Mics | | Price Point | $5 - $20 | $60 - $200 |
Verdict: The B4.09.24.1 camera is not for professional streaming. It is for functional video capture where cost is the primary driver. Focus Mechanism: Fixed Focus (Infinity focus, optimized for
Open a terminal and type lsusb -v. You might see a line like:
idVendor 0x0c45 (Microdia) ... iProduct USB Camera B4.09.24.1
Applications like OBS Studio, VLC, or Zoom may list this name as the default video input source.