NEC AD-7170S optical disc drive Internal vs NEC AD-7170S black

Comparison of AD-7170S, AD-7170S black

21 specifications	A NEC AD-7170S optical disc drive Internal Model AD-7170S View product	B NEC AD-7170S blackView product
Designidentical
Internal	Yes	Yes
Product colourKnown for one	—Unknown — not stated by the source	Black
Performanceidentical
Interface	Serial ATA	Serial ATA
Writing speedidentical
CD write speed	48x	48x
CD rewrite speed	32x	32x
DVD+R write speed	18x	18x
DVD+RW write speed	8x	8x
DVD-R Double Layer write speed	8x	8x
DVD-R write speed	18x	18x
DVD-RAM write speed	12x	12x
DVD-RW write speed	6x	6x
Reading speedidentical
CD read speed	48x	48x
DVD read speed	16x	16x
Access timeidentical
DVD drive average random access time	160 ms	160 ms
CD-ROM drive average random access time	140 ms	140 ms
Record modesidentical
Disc-at-once (DAO)	Yes	Yes
Multi session	Yes	Yes
Session-at-once (SAO)	Yes	Yes
Track-at-once (TAO)	Yes	Yes
Weight & dimensionsidentical
Weight	705 g	705 g
Other featuresidentical
Dimensions (WxDxH)	148 x 42 x 175 mm	148 x 42 x 175 mm

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.