Usb Vid 0c45 Pid 627b Rev 0100 Patched [ 2025 ]

If you have ever looked into your operating system’s device manager, dug through kernel logs on Linux, or troubleshooted a malfunctioning webcam, you may have encountered a string of seemingly cryptic characters: USB VID 0C45 PID 627B REV 0100. And if you’ve added the word "patched" to your search, you are likely either a developer trying to resurrect old hardware or a user frustrated with a device that refuses to work out of the box.

This article unpacks everything you need to know about this specific USB identifier, why it requires a "patch," and how to successfully implement it across different operating systems.

The word "patched" is the critical keyword here. Unlike mainstream webcams from Logitech or Microsoft, which have native drivers in Windows, macOS, and Linux, the Sonix 0C45:627B camera suffers from several deep-seated issues.

I downloaded the kernel source (or cloned the gspca staging driver) and modified drivers/media/usb/gspca/sn9c20x.c. usb vid 0c45 pid 627b rev 0100 patched

Key insight: For rev 0100, the driver sends register 0x01 with value 0x08 (power down) but never sends 0x00 (wake up) before streaming.

Here is the patch I applied:

--- sn9c20x.c.orig
+++ sn9c20x.c
@@ -2140,6 +2140,13 @@ static int sd_start(struct gspca_dev *g
    /* Reset the sensor interface */
    reg_w(sd, 0x17, 0x04);

After rebuilding the module (make -C /lib/modules/$(uname -r)/build M=$PWD), I inserted it with:

sudo rmmod gspca_sn9c20x
sudo insmod ./gspca_sn9c20x.ko

Plugged the camera in, and... cheese fired right up. If you have ever looked into your operating

As of 2025, the mainline Linux kernel is slowly removing old gspca drivers. The fully patched version now lives in:

If you rely on this hardware, freeze your kernel at version 5.15 or earlier, or switch to the patched gspca from GitHub’s torvalds/linux pull requests that specifically target 0c45:627b.