Many product listings, such as those on Newegg and Amazon, explicitly state that the E-Yooso Z88 is or "Software Customizable". This is where the confusion begins.
Pick specific colors for individual keys (e.g., highlighting WASD for gaming). Profile Management: Create and save up to three distinct profiles eyooso z88 keyboard software exclusive
Out of the box, the E-Yooso Z88 works fine. You get basic typing and the Fn + PgUp/PgDn keys to cycle through 19 preset lighting modes. But without the software, you are missing: Many product listings, such as those on Newegg