An internal 52x CD-ROM drive / E-IDE Connection / ABS Mechanism to reduce vibration & noise / Short drive length for easy installation Short drive length for easy installation into various systems SMART-X function that adjusts CD-DA/VCD data extraction to a fastest allowable speed according to both data request rate from host & disk quality Belt Tray Loading Mechanism Easy-Tray design for both horizontal & vertical operation Supports both 8cm & 12cm discs 3 tray-eject methods - Stop/Eject button, software, & pin hold eject