Nikon D300 User Manual page 518

Eye-Fi Upload (D300S only)
(User's Manual – D300S page 313)
Eye-Fi upload only shows on the Setup Menu of your D300S
when you have an Eye-Fi card inserted.
The Eye-Fi company makes several of these tiny SD/ SDHC
cards with built-in Wi-Fi transmitters. Figure 5-44 shows my
personal Eye-Fi 8GB Pro X2 high-speed "Class 6" Secure
Digital (SD) card.
With an Eye-Fi card inserted, and Eye-Fi software installed
on your laptop computer (or any computer connected via a
wireless network connection), you can take pictures and they
are automatically transferred to your computer.
Figure 5-44. Eye-FI 8GB Pro X2
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