LG Electronics 24X SATA DVD+/-RW Internal Drive GH24NS50 (Black) Speed - Burner 24x+ Reader 16x Random Access Time: DVD-ROM - 145ms; CD-ROM - 125ms; DVD-RAM - 270ms Interface: SATA Drive Type: Internal DVD+/-RW Dual Layer Drive Buffer Memory: 2 MB Drive Type: Internal DVD+/-RW Dual Layer Drive Interface: SATA Buffer Memory: 2 MB Random Access Time: DVD-ROM - 145ms; CD-ROM - 125ms; DVD-RAM - 270ms