Product comparison · 2 external hard drives

Verbatim 3.5'' External Hard Drive USB 2.0 640GB vs Verbatim Portable Hard Drive 250GB

Key differences

HDD capacity
- 3.5'' External Hard Drive USB 2.0 640GB:640 GB
- Portable Hard Drive 250GB:250 GB
HDD size
- 3.5'' External Hard Drive USB 2.0 640GB:3.5"
- Portable Hard Drive 250GB:2.5"
Weight
- 3.5'' External Hard Drive USB 2.0 640GB:940 g
- Portable Hard Drive 250GB:160 g
Internal
- 3.5'' External Hard Drive USB 2.0 640GB:No
- Portable Hard Drive 250GB:Yes

Differences highlightedShow differences only

Comparison of 3.5'' External Hard Drive USB 2.0 640GB, Portable Hard Drive 250GB
21 specifications	A Verbatim 3.5'' External Hard Drive USB 2.0 640GB View product	B Verbatim Portable Hard Drive 250GB View product
Hard drive2 differ
HDD capacityDiffers	640 GB	250 GB
HDD speed	5400 RPM	5400 RPM
HDD sizeDiffers	3.5"	2.5"
Type	HDD	HDD
Storage drive buffer size	8 MB	8 MB
Ports & interfacesidentical
Maximum data transfer rateKnown for one	480 Mbit/s	Unknown — not stated by the source
USB connector	USB	USB
USB version	2.0	2.0
Featuresidentical
Product colour	Black	Black
Poweridentical
External power adapterKnown for one	Yes	Unknown — not stated by the source
Weight & dimensions1 differ
WeightDiffers	940 g	160 g
Packaging dataidentical
Bundled softwareKnown for one	Nero BACKITUP 2	Unknown — not stated by the source
Other features1 differ
InternalDiffers	No	Yes
Mac compatibilityKnown for one	Yes	Unknown — not stated by the source
Power requirementsKnown for one	+12 VDC	Unknown — not stated by the source
Quick start guideKnown for one	Yes	Unknown — not stated by the source
USB 2.0 ports quantityKnown for one	1	Unknown — not stated by the source
USB cableKnown for one	USB	Unknown — not stated by the source
USB requiredKnown for one	Yes	Unknown — not stated by the source
Compatible operating systemsKnown for one	Windows ME/2000/XP/Vista Mac OS 9.x, Max OS X 10.1+	Unknown — not stated by the source
Dimensions (WxDxH)Known for one	202 x 114 x 40 mm	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.