Acer 640Gb USB 2.0 vs ADATA 500GB NH13

Comparison of 640Gb USB 2.0, 500GB NH13

25 specifications	A Acer 640Gb USB 2.0View product	B ADATA 500GB NH13View product
Hard drive1 differ
HDD capacityDiffers	640 GB	500 GB
HDD size	2.5"	2.5"
InterfaceKnown for one	—Unknown — not stated by the source	Serial ATA
Type	HDD	HDD
Read speedKnown for one	—Unknown — not stated by the source	109 MB/s
Write speedKnown for one	—Unknown — not stated by the source	107 MB/s
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	5000 Mbit/s
Maximum data transfer rateKnown for one	480 Mbit/s	—Unknown — not stated by the source
USB connectorKnown for one	USB	—Unknown — not stated by the source
USB versionKnown for one	2.0	—Unknown — not stated by the source
Featuresidentical
Product colour	Black	Black
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 10.0 Cheetah, Mac OS X 10.1 Puma, Mac OS X 10.2 Jaguar, Mac OS X 10.3 Panther, Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard
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	77.8 mm
DepthKnown for one	—Unknown — not stated by the source	118.8 mm
HeightKnown for one	—Unknown — not stated by the source	16 mm
WeightKnown for one	—Unknown — not stated by the source	165 g
Packaging dataidentical
Cables includedKnown for one	—Unknown — not stated by the source	USB
User guideKnown for one	—Unknown — not stated by the source	Yes
Other featuresidentical
USB 3.2 Gen 1 (3.1 Gen 1) 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.