Product comparison · 2 external hard drives

ADATA 2TB HD720 vs ADATA HM900 4TB

18specifications compared
9differ
9identical
10known for one product only

Key differences

HDD capacity
- 2TB HD720:2 TB
- HM900 4TB:4 TB
USB connector
- 2TB HD720:Micro-USB B
- HM900 4TB:USB
Operating temperature (T-T)
- 2TB HD720:5 - 50 °C
- HM900 4TB:5 - 55 °C
Width
- 2TB HD720:97.9 mm
- HM900 4TB:121 mm
Depth
- 2TB HD720:129.4 mm
- HM900 4TB:190 mm
Height
- 2TB HD720:20.2 mm
- HM900 4TB:36.5 mm
Weight
- 2TB HD720:211 g
- HM900 4TB:842 g

Side by side

Differences highlightedShow differences only

Comparison of 2TB HD720, HM900 4TB
28 specifications	A ADATA 2TB HD720 View product	B ADATA HM900 4TB View product
Hard drive1 differ
HDD capacityDiffers	2 TB	4 TB
Type	HDD	HDD
HDD sizeKnown for one	Unknown — not stated by the source	3.5"
Ports & interfaces1 differ
Maximum data transfer rateKnown for one	5000 Mbit/s	Unknown — not stated by the source
USB connectorDiffers	Micro-USB B	USB
USB version	3.2 Gen 1 (3.1 Gen 1)	3.2 Gen 1 (3.1 Gen 1)
USB data transfer ratesKnown for one	5000 Mbit/s	Unknown — not stated by the source
Features1 differ
Product colour	Black	Black
Housing materialKnown for one	Plastic, Rubber, Silicone	Unknown — not stated by the source
LED indicators	Yes	Yes
Windows operating systems supportedDiffers	Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Win	Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 Pro, Windows 10 Pro x64, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows
Mac operating systems supported	Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks	Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
Linux operating systems supported	Yes	Yes
CertificationKnown for one	RoHS	Unknown — not stated by the source
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
Security1 differ
Protection featuresDiffers	Dust resistant, Shock resistant, Water resistant	Shock resistant, Vibration proof
Fingerprint readerKnown for one	No	Unknown — not stated by the source
Security algorithmsKnown for one	Unknown — not stated by the source	256-bit AES
Poweridentical
Bus powered	No	No
Power consumption (typical)Known for one	Unknown — not stated by the source	12 W
Operational conditions1 differ
Operating temperature (T-T)Differs	5 - 50 °C	5 - 55 °C
Weight & dimensions4 differ
WidthDiffers	97.9 mm	121 mm
DepthDiffers	129.4 mm	190 mm
HeightDiffers	20.2 mm	36.5 mm
WeightDiffers	211 g	842 g
Packaging dataidentical
User guideKnown for one	Yes	Unknown — not stated by the source
Warranty card	Yes	Yes
Other featuresidentical
Connectivity technology	Wired	Wired

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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