Is the power adapter multivoltage 100v/240v?

Here are the specs listed on one of the A/C adapters that came w/ mine (I own (2) of these hubs):----------Ktec AC ADAPTORMODEL: KSAC0500200W1USINPUT: 100-240V ~50/60Hz 0.4AOUTPUT: 5.0VDC 2.0ADC connector polarity: translation of the polarity diagram -->> Tip is + (positive), Ring is - (negative)MADE IN CHINA 80BH----------

Just to clarify, the RHB-210 four usb ports are 3.0 or 2.0?

USB3 and backwardly compatible with USB2.

It should say on the electric plug whether it accepts 110-224V. If not I cannot use it in Europe or Asia. Please tell me if these words are on the plu

yes, it says input: 100-240V~50/50Hz

If I plug this into a Raspberry Pi, am I correct that it will NOT power the Raspberry Pi through the data cable?

The raspberry PI cannot get enough power through it's usb ports. You will still need to power it through it's power port. Fortunately, because this hub provides 500ma per USB port, you can then plug the power cable into this hub as well (leaving 3 remaining ports for your devices) and you won't seed a separate power supply for your Raspberry PI.

Brand	Rosewill
Colour	black
Item Height	2.25 Inches
Item Width	4.25 Inches
Product Dimensions	17.98 x 10.8 x 5.72 cm; 0.28 g
Item model number	RHB-210
Voltage	5 Volts
Are Batteries Included	No
Item Weight	0.28 g

Rosewill 4-Port USB 2.0 Hub with Power Adapter (RHUB-210)

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