Old Drone Camera Hacking

I found this camera module that used to be part of a cheap drone I bought close to 7 years ago. upon further looking, I noticed 4 empty pads and assumed they were debug pins, since it says "UART" somewhere on the middle of the module. I identified the power pins and soldered a USB cable to it. after plugging it to my computer, the module powered up but wouldn't appear on lsusb nor a serial terminal like coolterm. after a little bit of digging on the internet, I found a post mentioning a similar module to mine, but theirs appears to not have those 4 pins on the side. https://electronics.stackexchange.com/questions/490422/controlling-3-pin-pinhole-camera-from-drone-using-arduino one thing I could confirm was taking pictures and videos when hooking the yellow wire to power. I appreciate any help on identifying the purpose of those 4 pins