Freecom DataBar/512MB USB 2.0 vs Freecom USBcard 4GB

Comparison of DataBar/512MB USB 2.0, USBcard 4GB

20 specifications	A Freecom DataBar/512MB USB 2.0View product	B Freecom USBcard 4GBView product
Performance1 differ
CapacityDiffers	0.25 GB	4 GB
Device interfaceKnown for one	—Unknown — not stated by the source	USB Type-A
USB versionKnown for one	—Unknown — not stated by the source	2.0
Read speed	8 MB/s	8 MB/s
Write speed	7 MB/s	7 MB/s
Data retentionKnown for one	—Unknown — not stated by the source	10 year(s)
Compatible operating systemsKnown for one	—Unknown — not stated by the source	Windows 2000/XP/Vista, Mac OS 10.x
Designidentical
Form factorKnown for one	—Unknown — not stated by the source	Other
Product colourKnown for one	—Unknown — not stated by the source	Black
Key ringKnown for one	—Unknown — not stated by the source	Yes
CertificationKnown for one	—Unknown — not stated by the source	CE, FCC
Weight & dimensions1 differ
WidthKnown for one	—Unknown — not stated by the source	85.5 mm
DepthKnown for one	—Unknown — not stated by the source	54 mm
HeightKnown for one	—Unknown — not stated by the source	2 mm
WeightDiffers	9 g	10 g
Operational conditionsidentical
Operating temperature (T-T)Known for one	—Unknown — not stated by the source	10 - 35 °C
Storage temperature (T-T)Known for one	—Unknown — not stated by the source	-20 - 80 °C
Other featuresidentical
USB requiredKnown for one	—Unknown — not stated by the source	Yes
USB 2.0 ports quantityKnown for one	1	—Unknown — not stated by the source
USB poweredKnown for one	Yes	—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.