P502 is a fully customizable, multi-mode backlight macro game PAD chip, using a USB low-speed interface and supporting custom configuration storage.

Customization: P502 supports 4kb~128kb EEPROM memory read and write, and up to 4 buttons, allowing users to configure button functions according to their needs. It also supports button macro definitions. USB device information can be customized, including VID, PID, manufacturer information, and device information strings.

Backlight applications: P502 supports 2 channels of single-wire colorful lights, with up to 16 lights per channel, totaling 11 backlight modes. Users can choose the number of lights and backlight brightness as needed, and it also supports switching backlight modes and colors through buttons.