NEC has introduced its high speed CD-RW drive, capable of writing to CD-R on 24x max. same as writing or rewriting CD-RW discs at 10x speed reading CD-ROM media at 40x max. speed with a access time of 98 ms. The NR-7900 offers fast and highly reliable writer and rewritable technology without compromising read performance. By using JustLink the NR-7900 is equipped with the most enhanced burn proof technology which prevents buffer under run errors. In addition the NR-7900 takes advance of NEC's "high resolution writing strategy" and NEC's "active optimum power control" (Active OPC). The "high resolution writing strategy", using advanced laser modulation to enhance the accuracy of the written data. Active OPC dynamically monitoring writing power and reflection of the media in use, calculating the optimum laser power and adjusting it in real-time.