power button. The ZEN MX extends importing from SD card to internal memory and library beyond the ZEN's picture import mode, adding music. The ZEN MX features the MSC/UMS transfer system that makes the player compatible with Apple computers. The ZEN MX user interface is not as promptly responsive to button presses as the ZEN's. Neither ZEN MX's nor ZEN's firmware can be installed on the other device. See also Creative ZEN Creative Technology Portable media player Comparison of portable media players References External links Official product page (US) Portable media players Creative Technology products Audiovisual introductions in 2007