LG GSA-E60N 20x DVD&plusmn;RW DL USB 2.0 External Drive w/SecurDisc Technology (Black) LG GSA-E60N 20x DVD RW DL USB 2.0 External Drive General Features: Black housing 2 MB buffer USB 2.0 interface Data Transfer Rate: up to 480 Mbps Write Method(DVD-RAM/+RW): Random Write Write Method(DVD-R/RW): Disc at Once, Incremental Recording, Restricted Overwrite (DVD-RW only) Write Method(DVD+R): Sequential Recording SecurDisc Technology Write Speed: DVD+R: 2.4x, 4x (CLV), 8x (ZCLV), 12x (PCAV), 16x,