Solve : USB 2/3 Compatibility?

1.	Solve : USB 2/3 Compatibility?
Answer» I want to purchase and use a card (swipe type) reader for my HP business lap TOP, to SAVE me having to punch in credit card numbers. My HP has USB-2 ports on it. The reader I am considering says it has a USB-3 plug on its interconnect cable. Are these two devices compatible? USB 3 is backwards compatible with USB 2....so yes. It'll just RUN at USB 2 speeds...Also USB 3 is able to supply more current than usb 2 so if the reader uses more than 400ma you may need to use 2* USB2 ports using a Y cable or get a usb 3 powered hub. Or if your HP Laptop has an esata port you can use that as the current is normally HIGHER than USB 2 but check the HP specs. Just a thought, In some COUNTRIES owning and or using a card reader/card skimmer is illegal. Storing credit information on computer could be in breach of the credit card t&c's. I would make sure you have the card owners permission even if it is legal.

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