This is an HDMI to CSI camera port adapter ,HDMI in Module,up to 1080p@30fps support from HDMI input, backward compatible.
It allows you to use HDMI cameras just as the standard Raspberry Pi CSI cameras
It is also compatible with Raspberry Pi 4 Model B, Raspberry Pi 3 Model B+/3B, Raspberry Pi 3 Model A+, Raspberry Pi 2 Model B,Raspberry Pi 1 Model B+,Raspberry Pi Zero W Raspberry Pi Zero
Note:If you need to use it for Raspberry Pi Zero ,Zero W, extra FCC cable is required.