Product comparison · 2 external hard drives

Acer 640Gb USB 2.0 vs ADATA 1TB NH92

7specifications compared
3differ
4identical
15known for one product only

Key differences

HDD capacity
- 640Gb USB 2.0:640 GB
- 1TB NH92:1 TB
Product colour
- 640Gb USB 2.0:Black
- 1TB NH92:Blue
Bus powered
- 640Gb USB 2.0:USB
- 1TB NH92:No

Side by side

Differences highlightedShow differences only

Comparison of 640Gb USB 2.0, 1TB NH92
22 specifications	A Acer 640Gb USB 2.0 View product	B ADATA 1TB NH92 View product
Hard drive1 differ
HDD capacityDiffers	640 GB	1 TB
HDD speedKnown for one	5400 RPM	Unknown — not stated by the source
Ports & interfacesidentical
USB data transfer ratesKnown for one	Unknown — not stated by the source	480 Mbit/s
Maximum data transfer rateKnown for one	480 Mbit/s	Unknown — not stated by the source
Features1 differ
Product colourDiffers	Black	Blue
Windows operating systems supportedKnown for one	Unknown — not stated by the source	Windows 2000, Windows 2000 Professional, Windows 7 Home Premium, Windows 7 Professional, Windows 7 Ultimate, Windows Vista Business, Windows Vista Home Basic, Windows Vista Home Premium, Windows Vista Ultimate, Windows XP Home, Windows XP Professional
Mac operating systems supportedKnown for one	Unknown — not stated by the source	Mac OS X 10.4 Tiger
Linux operating systems supportedKnown for one	Unknown — not stated by the source	Yes
CertificationKnown for one	CE, FCC	Unknown — not stated by the source
Power1 differ
Bus poweredDiffers	USB	No
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	75.8 mm
DepthKnown for one	Unknown — not stated by the source	114 mm
HeightKnown for one	Unknown — not stated by the source	12 mm
WeightKnown for one	Unknown — not stated by the source	152 g
Packaging dataidentical
Cables includedKnown for one	Unknown — not stated by the source	USB
Other featuresidentical
USB 2.0 ports quantityKnown for one	Unknown — not stated by the source	1
USB requiredKnown for one	Unknown — not stated by the source	Yes
Connectivity technologyKnown for one	Wired	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.

More external hard drive comparisons

All external hard drive comparisons