Verbatim 2.5'' Portable 320GB vs Verbatim 250GB USB

Comparison of 2.5'' Portable 320GB, 250GB USB

24 specifications	A Verbatim 2.5'' Portable 320GBView product	B Verbatim 250GB USBView product
Hard drive1 differ
HDD capacityDiffers	320 GB	250 GB
HDD speed	5400 RPM	5400 RPM
HDD sizeKnown for one	2.5"	—Unknown — not stated by the source
Type	HDD	HDD
Storage drive buffer sizeKnown for one	8 MB	—Unknown — not stated by the source
Featuresidentical
Product colourKnown for one	Silver	—Unknown — not stated by the source
Poweridentical
Bus powered	USB	USB
Weight & dimensions1 differ
WidthKnown for one	135 mm	—Unknown — not stated by the source
DepthKnown for one	85 mm	—Unknown — not stated by the source
HeightKnown for one	25 mm	—Unknown — not stated by the source
WeightDiffers	150 g	147 g
Packaging dataidentical
Bundled softwareKnown for one	Nero BACKITUP 2 Essentials	—Unknown — not stated by the source
Other features1 differ
Internal	No	No
Mac compatibility	Yes	Yes
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 required	Yes	Yes
Compatible operating systemsDiffers	Windows 2000/XP/Vista Mac OS 9.x/10.1 +	Windows 2000, XP, Vista, Mac OS 9x, Mac OS X 10.1
Minimum system requirementsKnown for one	—Unknown — not stated by the source	USB 1.1/2.0
Dimensions (WxDxH)Known for one	—Unknown — not stated by the source	86 x 137 x 16 mm
Ports & interfacesidentical
Maximum data transfer rateKnown for one	—Unknown — not stated by the source	480 Mbit/s
USB connectorKnown for one	—Unknown — not stated by the source	USB
USB versionKnown for one	—Unknown — not stated by the source	2.0

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.