Will a USB 3.0 flash drive work in a USB 2.0 port ?
USB 3.0 Flash Drives and card readers are backwards compatible with USB 2.0 and USB 1.1 ports.
A USB 3.0 Flash Drive or card reader will work at the speed of the port it is used in, for example if you use a USB 3.0 Flash Drive in your USB 2.0 laptop, it will work at USB 2.0 speed.