Product comparison · 2 optical disc drives

Lenovo USB 2.0 Portable CD-RW Drive vs NEC ND-4550 DVDRW 16X silver

8specifications compared
7differ
1identical
14known for one product only

Key differences

Internal
- USB 2.0 Portable CD-RW Drive:No
- ND-4550 DVDRW 16X silver:Yes
Product colour
- USB 2.0 Portable CD-RW Drive:Black
- ND-4550 DVDRW 16X silver:Silver
CD write speed
- USB 2.0 Portable CD-RW Drive:8x
- ND-4550 DVDRW 16X silver:48x
CD rewrite speed
- USB 2.0 Portable CD-RW Drive:4x
- ND-4550 DVDRW 16X silver:32x
CD read speed
- USB 2.0 Portable CD-RW Drive:24x
- ND-4550 DVDRW 16X silver:48x
Dimensions (WxDxH)
- USB 2.0 Portable CD-RW Drive:140 x 146 x 15 mm
- ND-4550 DVDRW 16X silver:148 x 42 x 190 mm
I/O ports
- USB 2.0 Portable CD-RW Drive:USB
- ND-4550 DVDRW 16X silver:analog- and digital output

Side by side

Differences highlightedShow differences only

Comparison of USB 2.0 Portable CD-RW Drive, ND-4550 DVDRW 16X silver
22 specifications	A Lenovo USB 2.0 Portable CD-RW Drive View product	B NEC ND-4550 DVDRW 16X silver View product
Design2 differ
InternalDiffers	No	Yes
Product colourDiffers	Black	Silver
Performanceidentical
Optical drive typeKnown for one	Unknown — not stated by the source	DVD-RW
Drive device, buffer size	2 MB	2 MB
Writing speed2 differ
CD write speedDiffers	8x	48x
CD rewrite speedDiffers	4x	32x
Reading speed1 differ
CD read speedDiffers	24x	48x
DVD read speedKnown for one	Unknown — not stated by the source	16x
Access timeidentical
DVD drive average random access timeKnown for one	Unknown — not stated by the source	160 ms
Access timeKnown for one	Unknown — not stated by the source	140 ms
Weight & dimensionsidentical
WeightKnown for one	Unknown — not stated by the source	900 g
Other features2 differ
Write methodsKnown for one	Unknown — not stated by the source	CD: DOA, SAO, TAO, multisession
Dimensions (WxDxH)Differs	140 x 146 x 15 mm	148 x 42 x 190 mm
I/O portsDiffers	USB	analog- and digital output
DVD+R speedKnown for one	Unknown — not stated by the source	16x
DVD+RW speedKnown for one	Unknown — not stated by the source	8x
DVD-R speedKnown for one	Unknown — not stated by the source	16x
DVD-RW speedKnown for one	Unknown — not stated by the source	6x
Media types supportedKnown for one	CD-Audio, CD Enhanced, CD-Extra, CD-DA, CD-R, CD-I, CD-RW, CD-ROM, CD-Text, Video CD, Photo CD	Unknown — not stated by the source
Compatible operating systemsKnown for one	-Microsoft Windows XP -Microsoft Windows 2000 -Microsoft Windows Me -Microsoft Windows 98	Unknown — not stated by the source
Operational conditionsidentical
Operating relative humidity (H-H)Known for one	8 - 85%	Unknown — not stated by the source
Operating temperature (T-T)Known for one	5 - 40 °C	Unknown — not stated by the source

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.

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