EZ Dupe 3-Target DVD/CD 24X Duplicator GS3SOB Black Standalone duplication system, no computer needed | Burn approximately 21 DVDs (4.7GB) at 8X per hour! | Supports DVD+R/RW, DVD-R/RW and DL DVD blank media formats Copy, test, verify, and compare functions available Duplicator will automatically recognize format of source discs Real-time copy and compare technology to ensure successful and complete copies Real-time display of detailed information on bright LCD screen User friendly interface and simple operation No warm-up or cool-down period required System is upgradeable via firmware