AV2HDMI is to convert AV signal to HDMI. HDMI2AV is to convert HDMI to AV. They can only go one direction AV RCA Input: PAL NTSC3.58 NTSC4.43 SECAM PAL/M PAL/N HDMI: 1080P 60HZ 720P 60HZ Switch to 720P when unable to display 1080P Mini-USB Power Plug the mini-usb cable to any handphone charger to power on the converter. Power adapter not provided, required 5V 1A. Do note that using this device does not mean that your resolution will become high definition because it depends on the native resolution of the input. The purpose of this device is to convert the analogue signal to digital format so as to display on devices that support HDMI such as HD TV, projector, HDMI splitter, HDMI switch, etc and vice versa. Image may not be clear like HD as some signal will be loss during the conversion process. Note: Colour of set may Varies.