What are the HDMI and USB port types? The HDMI port supports a Micro HDMI (1.4) cable and the USB port supports a Micro USB (2.0) cable. Related articles Does the YI 4K Action Camera support the AV OUT feature? What types of HDMI cable does the camera support? Why doesn't my Type-C to RCA cable unable to output AV signal to the monitor? Where can I find and download the latest firmware? (YI Action Camera) Setting Up Your Camera With YI Home app