Acer 80GB USB 2.0 external hard disk drive vs Acer External HDD 250GB SATA (USB Interface)

Comparison of 80GB USB 2.0 external hard disk drive, External HDD 250GB SATA (USB Interface)

21 specifications	A Acer 80GB USB 2.0 external hard disk driveView product	B Acer External HDD 250GB SATA (USB Interface)View product
Hard drive1 differ
HDD capacityDiffers	80 GB	250 GB
HDD speedKnown for one	4200 RPM	—Unknown — not stated by the source
Storage drive average seek timeKnown for one	12 ms	—Unknown — not stated by the source
Storage drive buffer sizeKnown for one	2 MB	—Unknown — not stated by the source
InterfaceKnown for one	—Unknown — not stated by the source	Serial ATA
Ports & interfacesidentical
USB connectorKnown for one	USB	—Unknown — not stated by the source
USB versionKnown for one	2.0	—Unknown — not stated by the source
Featuresidentical
LED indicatorsKnown for one	Power	—Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 50 °C	—Unknown — not stated by the source
Storage temperature (T-T)Known for one	-20 - 70 °C	—Unknown — not stated by the source
Operating relative humidity (H-H)Known for one	5 - 90%	—Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	146 mm	—Unknown — not stated by the source
DepthKnown for one	75 mm	—Unknown — not stated by the source
HeightKnown for one	14 mm	—Unknown — not stated by the source
Other featuresidentical
Drive device, transfer rateKnown for one	480 MB/s	—Unknown — not stated by the source
Dimensions (WxDxH)Known for one	146 x 75 x 14 mm	—Unknown — not stated by the source
USB 2.0 ports quantityKnown for one	—Unknown — not stated by the source	1
Compatible operating systemsKnown for one	—Unknown — not stated by the source	Windows Vista / 98SE / ME / 2000 / XP, Mac OS 9.0 +

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.