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Product comparison · 2 optical disc drives

HP External USB CD/DVD R/RW Drive vs NEC DVD RW drive AD7240S

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  • 12specifications compared
  • 10differ
  • 2identical
  • 34known for one product only

Key differences

  • Internal
    • No
    • Yes
  • CD write speed
    • 24x
    • 48x
  • CD rewrite speed
    • 24x
    • 32x
  • DVD+R write speed
    • 8x
    • 24x
  • DVD-R write speed
    • 8x
    • 24x
  • DVD-R9 write speed
    • 6x
    • 12x
  • DVD-RAM write speed
    • 5x
    • 12x
  • CD read speed
    • 24x
    • 48x

Side by side

Differences highlightedShow differences only
46 specifications
A

HP

External USB CD/DVD R/RW DriveView product
B

NEC

DVD RW drive AD7240SView product
Design1 differ
InternalDiffersNoYes
Product colourKnown for oneBlack
Disc loading typeKnown for oneTray
MountingKnown for oneHorizontal
Performanceidentical
InterfaceKnown for oneSerial ATA
Drive device, buffer sizeKnown for one2 MB
Optical disc diameterKnown for one120 mm
Burst transfer rateKnown for one150 MB/s
Writing speed6 differ
CD write speedDiffers24x48x
CD rewrite speedDiffers24x32x
CD-R write speedKnown for one48x
CD-RW write speedKnown for one32x
DVD+R Double Layer write speedKnown for one12x
DVD+R write speedDiffers8x24x
DVD-R Double Layer write speedKnown for one12x
DVD-R write speedDiffers8x24x
DVD-R9 write speedDiffers6x12x
DVD-RAM write speedDiffers5x12x
Reading speed1 differ
CD read speedDiffers24x48x
DVD+R read speedKnown for one16x
DVD-R Double Layer read speedKnown for one12x
DVD-R read speedKnown for one16x
DVD-ROM read speedKnown for one8x
Access timeidentical
DVD drive average random access timeKnown for one160 ms
CD-ROM drive average random access timeKnown for one140 ms
Record modesidentical
Disc-at-once (DAO)Known for oneYes
Fixed packetKnown for oneYes
Multi sessionKnown for oneYes
Packet writingKnown for oneYes
Session-at-once (SAO)Known for oneYes
Track-at-once (TAO)Known for oneYes
Variable packetKnown for oneYes
Weight & dimensionsidentical
WeightKnown for one640 g
Packaging contentidentical
Warranty cardKnown for oneYes
Other features2 differ
Media types supportedKnown for oneDVD-ROM, DVD-R (DL), DVD-RW, DVD-RAM, DVD+R9, DVD+RW, CD-ROM, CD-R, CD-RW
Dimensions (WxDxH)Differs185 x 135 x 151 mm148 x 42 x 170 mm
Compatible operating systemsDiffersMicrosoft Windows 2000 SP4; Windows XP; Windows VistaMicrosoft Vista
Language versionKnown for oneMultilingual
Additional accessoriesKnown for oneYes
Technical featuresKnown for oneMultiRead, PC2001
Minimum system requirementsKnown for onePentium III 1.0GHz or higher CPU; 512MB or higher RAM; Hard must have access time < 20 ms with a minimum of 100MB free space; 9GB free space for creating a DVD double layer image file (5GB for single layer)
Device typeKnown for oneCD/DVD-RW combo
Size (imperial)Known for one1.85 cm (0.73")
Weight (imperial)Known for one0.454 kg (1 lbs)

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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