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#101
A USB cable from the camera to the computer is easiest but the transfer takes longer and the camera has to be kept on, running down the batteries.
One can get external card readers that plug directly into a USB port. Just pull the card from the camera, plug it into the reader, and plug the reader into a USB port. Some readers connect to the computer via a USB cable. Most of those you can leave connected to the computer and just plug in the card at any time.
Then there are the internal card readers. They can be added to a computer although some, especially laptops, already have them built in. I like those because I don't have to keep track of an external card reader or eat up desk space with a cable connected one. This is mine:
Most card readers, internal and external, connect to the computer by a USB connection. USB 3.0 readers are becoming more available and are needed to realize the full speed potential of the faster cards, such as the Class 10 SDs. My internal reader connects via PCIe 2.0 x1. It can handle one device (cards, USB sticks, etc.) at full speed although adding a second device doesn't noticeably slow anything down. It probably would be able to handle more at full speed if the connection was PCIe 3.0 x1.
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