Yes, Integral USB 3.0 Flash Drives and card readers are backwards compatible with USB 2.0 and USB 1.1 ports. The USB 3.0 Flash Drive or card reader will work at the speed of the port, for example if you use a USB 3.0 Flash Drive in your USB 2.0 laptop it will work at the USB 2.0 speed.
To use USB 3.0 ports you will need a driver from the manufacturer of your PC, motherboard or PCI card. The standard USB Mass Storage Driver from Microsoft (included in Windows XP/Vista and 7 will work - but may not provide optimal performance.
Yes, a compatible driver is required for USB 3.0 SuperSpeed products such as Flash Drives and Card Readers. This should be included by the manufacturer of the PC or laptop, motherboard or add-in (PCI) card that has the USB 3.0 ports.
The Microsoft USB Mass Storage Class Device driver supplied with Windows 7/Vista/XP/2000/Me for USB 2.0 currently has not been updated to take account of USB 3.0. It should work in most cases but may provide limited speed performance. Windows 8 will have native USB 3.0 support.
Yes, you can use a USB 3.0 Flash Drive on USB 2.0 devices now, as they are backwards compatible.
When you upgrade to a USB 3.0 system in the future, such as a new PC with Windows 8 (and certain new Apple Macs) you can then benefit from the faster "SuperSpeed" data transfer rates.
Integral have also found that our USB 3.0 Flash Drives perform faster on USB 2.0 systems then current USB 2.0 Flash Drives.