ADATA CH91 external hard drive vs Iomega eGo™ HD 320GB USB 2.0

Comparison of CH91, eGo™ HD 320GB USB 2.0

28 specifications	A ADATA CH91 external hard drive Model CH91 View product	B Iomega eGo™ HD 320GB USB 2.0View product
Hard driveidentical
HDD capacity	320 GB	320 GB
HDD speed	5400 RPM	5400 RPM
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
Ports & interfacesidentical
USB connector	USB	USB
USB version	2.0	2.0
Maximum data transfer rateKnown for one	480 Mbit/s	—Unknown — not stated by the source
Features1 differ
Product colourDiffers	Blue	Red
Plug and PlayKnown for one	Yes	—Unknown — not stated by the source
Poweridentical
Bus powered	USB	USB
Weight & dimensionsidentical
WidthKnown for one	—Unknown — not stated by the source	88.9 mm
DepthKnown for one	—Unknown — not stated by the source	136.5 mm
HeightKnown for one	—Unknown — not stated by the source	15.9 mm
WeightKnown for one	—Unknown — not stated by the source	185 g
Packaging data1 differ
Bundled softwareDiffers	HDD to go	McAfee VirusScan Plus, EMC Retrospect Express Backup Iomega QuikProtect, MozyHome Online Backup
Other features1 differ
Internal	No	No
Mac compatibility	Yes	Yes
MaterialKnown for one	—Unknown — not stated by the source	Aluminium
Minimum processorKnown for one	—Unknown — not stated by the source	G3 / Pentium II
Minimum system requirementsKnown for one	—Unknown — not stated by the source	Microsoft Internet Explorer 6.0, Firefox 1.0, Apple Safari 1.2 +
Quick start guideKnown for one	—Unknown — not stated by the source	Yes
Supported data transfer ratesKnown for one	—Unknown — not stated by the source	480 Mbits/s
USB cable	USB	USB
USB requiredKnown for one	—Unknown — not stated by the source	Yes
Compatible operating systemsDiffers	Windows 2000, XP, Vista Mac OS X 10.4 Linux Kernal 2.4	Mac OS X 10.1.5 + Microsoft Windows Vista, 2000, Professional/XP Home/XP Professional/XP Professional x64
Interface typeKnown for one	USB 2.0	—Unknown — not stated by the source
Dimensions (WxDxH)Known for one	134 x 82 x 15.7 mm	—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.