Understanding the Activity Light
The memory card reader activity light is off when there are no media cards plugged into the slots.
The light turns on when a media card is inserted into a slot.
The light blinks when data is being transferred between the card and the computer.
Formatting a Memory Card
If you have not used the memory card before, or if the card has become corrupted, you may need to format the card before using it.
NOTE: Some memory cards have a lock position. To view or edit your picture files, make sure that the memory card is in the unlocked position.
1Format the memory card in your digital camera. Follow the instructions that came with your digital camera.
Or
Insert the media into the correct card slot on the reader until it stops and locks into place. The activity light on the memory card reader lights, and the computer automatically detects the media.
2Click the Windows Start Button 
on the taskbar, and then click Computer.
3In the Devices with Removable Storage area,
4Select Format, and then type a label name into the label box.
5For best compatibility, select FAT as the file system settings.
6Click Start.
7Click OK in the Format Complete window, and then click Close.
Using the Memory Card Reader 113