Viking InterWorks IntelliFlash Quick Start Manual page 10

Step 3: Plug in the Card Reader into the USB port
located on the side of the MAC. (Note: the
card reader will not work if you plug it into
the USB port on the keyboard due to
insufficient power) Insert memory card(s)
into the card driver to gain access.
Step 4: To safely remove the card reader, drag the
portable drives icons to the trash icon.
5.1 Replace /Update driver
If you have installed the driver once before, dragging
the USBCardReaderShim and the
USBCardReaderDriver file into //system
folder/extensions, you will see the following screen.
Select "ok" to replace/update the existing driver or
select "cancel" to use the existing driver.