average access time random dvd rom 145 ms cd rom 125 ms sustained transfer rate dvd rom 2216 mbytess 16x max cd rom 7200 kbs 48x max burst transfer rate sata ultra dma mode 6 multi word dma mode2 pio mode 4 multimedia mpc 3 compliant write speed dvd r 2x 4x clv 8x pcav 16x 24x cav dvd r dl 4x clv 8x zclv dvd rw 2x 4x 6x clv dvd ram 2x 3x 5x zclv dvd r 24x clv 4x clv 8x pcav 16x 24x cav dvd r dl 24x 4x clv 8x zclv dvd rw 24x 4x 6x clv 8x zclv cd r 16x clv 32x 40x pc