Acer 640Gb USB 2.0 vs Acer 750Gb USB 2.0

Comparison of 640Gb USB 2.0, 750Gb USB 2.0

15 specifications	A Acer 640Gb USB 2.0View product	B Acer 750Gb USB 2.0View product
Hard drive1 differ
HDD capacityDiffers	640 GB	750 GB
InterfaceKnown for one	—Unknown — not stated by the source	Serial ATA
Ports & interfacesidentical
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
USB data transfer ratesKnown for one	—Unknown — not stated by the source	480 Mbit/s
Power1 differ
Bus poweredDiffers	USB	No
Other featuresidentical
Connectivity technologyKnown for one	Wired	—Unknown — not stated by the source
USB 2.0 ports quantityKnown for one	—Unknown — not stated by the source	1
USB requiredKnown for one	—Unknown — not stated by the source	Yes

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.