Product comparison · 2 external hard drives

ADATA CH11 USB 3.0 640GB vs Verbatim USB 3.0 4TB

14specifications compared
8differ
6identical
18known for one product only

Key differences

HDD capacity
- CH11 USB 3.0 640GB:640 GB
- USB 3.0 4TB:4 TB
USB connector
- CH11 USB 3.0 640GB:Micro-USB B
- USB 3.0 4TB:USB Type-B
Bus powered
- CH11 USB 3.0 640GB:USB
- USB 3.0 4TB:No
Width
- CH11 USB 3.0 640GB:81.5 mm
- USB 3.0 4TB:118 mm
Depth
- CH11 USB 3.0 640GB:21 mm
- USB 3.0 4TB:192 mm
Height
- CH11 USB 3.0 640GB:120 mm
- USB 3.0 4TB:49 mm
Weight
- CH11 USB 3.0 640GB:186 g
- USB 3.0 4TB:1 kg

Side by side

Differences highlightedShow differences only

Comparison of CH11 USB 3.0 640GB, USB 3.0 4TB
32 specifications	A ADATA CH11 USB 3.0 640GB View product	B Verbatim USB 3.0 4TB View product
Hard drive1 differ
HDD capacityDiffers	640 GB	4 TB
Type	HDD	HDD
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	8 MB
HDD sizeKnown for one	2.5"	Unknown — not stated by the source
Read speedKnown for one	90 MB/s	Unknown — not stated by the source
Ports & interfaces1 differ
USB connectorDiffers	Micro-USB B	USB Type-B
USB version	3.2 Gen 1 (3.1 Gen 1)	3.2 Gen 1 (3.1 Gen 1)
USB data transfer ratesKnown for one	Unknown — not stated by the source	5000 Mbit/s
Maximum data transfer rateKnown for one	5000 Mbit/s	Unknown — not stated by the source
Features1 differ
Product colour	Black	Black
LED indicatorsKnown for one	Unknown — not stated by the source	Power, Yes
On/off switchKnown for one	Unknown — not stated by the source	Yes
Mac operating systems supportedDiffers	Mac OS 9.0, Mac OS 9.1, Mac OS 9.2, 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, Mac OS X 10.7 Lion	Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion
Plug and PlayKnown for one	Yes	Unknown — not stated by the source
Windows operating systems supportedKnown for one	Windows 2000, Windows 2000 Professional, 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 Vista Business, Windows Vista Business x64, Windows Vista Hom	Unknown — not stated by the source
Power1 differ
Bus poweredDiffers	USB	No
External power adapterKnown for one	Unknown — not stated by the source	Yes
AC adapter output voltageKnown for one	Unknown — not stated by the source	12 V
Weight & dimensions4 differ
WidthDiffers	81.5 mm	118 mm
DepthDiffers	21 mm	192 mm
HeightDiffers	120 mm	49 mm
WeightDiffers	186 g	1 kg
Packaging dataidentical
Cables included	USB	USB
Other featuresidentical
AC adapter includedKnown for one	Unknown — not stated by the source	Yes
DC-in jackKnown for one	Unknown — not stated by the source	Yes
Supported HDD interfacesKnown for one	Unknown — not stated by the source	Serial ATA
USB 3.2 Gen 1 (3.1 Gen 1) ports quantity	1	1
USB required	Yes	Yes
Compatible operating systemsKnown for one	Unknown — not stated by the source	Windows XP Windows Vista Windows 7 Windows 8
InternalKnown for one	No	Unknown — not stated by the source
Mac compatibilityKnown for one	Yes	Unknown — not stated by the source
Quick start guideKnown for one	No	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.

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