Rosewill Ultra Slim Aluminum USB 3.0 6X BD Blu-Ray External Writer Optical Drive RBR-100 Black BD-ROM Access Time: 300ms, DVD-ROM Access Time: 190ms, CD-ROM Access Time: 180ms, Cache: 2MB Read Speed: BD-ROM: 6X, DVD-ROM: 8X, CD-ROM: 24X Write Speed: BD-R: 6X, BD-R DL: 6X, BD-RE: 2X, BD-RE DL: 2X, DVD+R: 8X, DVD+RW: 8X, DVD-R: 8X, DVD-RW: 6X, CD-R: 24X, CD-RW: 24X, DVD+R DL: 6X, DVD-R DL: 6X, DVD-RAM: 5X High efficient power saving modes no power adapter required SMART-X Smart Monitoring & Adjusting Read-speed Technology for extraction SMART-BURN Smart Monitoring & Adapting Recording Technology for Burning Support Over-Burn and Raw mode copy Aluminum case