Product comparison · 2 optical disc drives

NEC ND-3540 DVDRW 16X DL silver vs NEC ND-4550 DVDRW 16X black

Key differences

Product colour
- ND-3540 DVDRW 16X DL silver:Silver
- ND-4550 DVDRW 16X black:Black
I/O ports
- ND-3540 DVDRW 16X DL silver:Digital-out line-out
- ND-4550 DVDRW 16X black:analog- and digital output
DVD-R speed
- ND-3540 DVDRW 16X DL silver:6x
- ND-4550 DVDRW 16X black:16x

Differences highlightedShow differences only

Comparison of ND-3540 DVDRW 16X DL silver, ND-4550 DVDRW 16X black
18 specifications	A NEC ND-3540 DVDRW 16X DL silver View product	B NEC ND-4550 DVDRW 16X black View product
Design1 differ
Internal	Yes	Yes
Product colourDiffers	Silver	Black
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
Access timeidentical
DVD drive average random access time	160 ms	160 ms
Access time	140 ms	140 ms
Weight & dimensionsidentical
Weight	900 g	900 g
Other features3 differ
Write methodsDiffers	DAO, SAO, TAO, variable or fixed packet, multisession	CD: DOA, SAO, TAO, multisession
Dimensions (WxDxH)	148 x 42 x 190 mm	148 x 42 x 190 mm
I/O portsDiffers	Digital-out line-out	analog- and digital output
DVD+R speed	16x	16x
DVD+RW speed	8x	8x
DVD-R speedDiffers	6x	16x
DVD-RW 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.