NEC DVD RW ND-3550 vs NEC DVD RW ND-4551

Comparison of DVD RW ND-3550, DVD RW ND-4551

16 specifications	A NEC DVD RW ND-3550View product	B NEC DVD RW ND-4551View product
Designidentical
Internal	Yes	Yes
Product colour	White	White
Performanceidentical
Optical drive type	DVD-RW	DVD-RW
Drive device, buffer size	2 MB	2 MB
Writing speedidentical
CD write speed	48x	48x
CD rewrite speed	32x	32x
Reading speedidentical
CD read speed	48x	48x
DVD read speed	16x	16x
Other features1 differ
Media types supportedDiffers	DVD-ROM, DVD-R, DVD-RW, DVD+R, DVD+R9, DVD+RW, DVD-Video, CD Extra, CD Text, CD-I Ready, CD-Bridge, Photo CD, Video CD, Hybrid CD	DVD-ROM, DVD-R, DVD-RW, DVD+R, DVD+R9, DVD+RW, DVD-Video, CD-ROM, CD-ROM XA, CD-Audio, CD Extra, CD Text, CD-I Ready, CD-Bridge, Photo-CD, VideoCD, Hybrid CD
Dimensions (WxDxH)	148 x 190 x 42 mm	148 x 190 x 42 mm
Number of optical discsKnown for one	1 discs	—Unknown — not stated by the source
DVD+R speed	16x	16x
DVD+RW speed	8x	8x
DVD-R speed	16x	16x
DVD-RW speed	6x	6x
Double Layer DVD write speed	6x	6x

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.