Nikon D300 User Manual page 519

You can also ask the card to simultaneously transfer the
images to file-sharing websites like Flickr and Facebook (plus
23 more).
Most lower-cost Eye-Fi cards require a wireless network to
transfer the images. However, recently Eye-Fi came out with
a card that will do "Ad Hoc" transfers, meaning that they
don't need a wireless network connection and will send
pictures directly to a computer with wireless capability. In
effect, the Eye-Fi card becomes a wireless (Wi-Fi) transmitter
that can talk directly to a Wi-Fi-enabled notebook or desktop
computer—without an intervening network.
At the time of this book's writing, only one card—the Eye-Fi
8GB Pro X2—will transfer directly to a notebook computer
without needing a wireless network as an intermediary. The
other cards cost less but require a wireless network
connection to move images.
Eye-Fi separates its Ad Hoc transfer capable card(s) under the
Pro moniker. The other cards have names like Connect X2,
Geo X2, and Explore X2. Only the Pro X2 cards can do the
"no network required", direct-to-computer Ad Hoc file
transfers. Since memory cards are extremely volatile,
price-wise, I'm sure that capacities and
card names will change quickly. However, just be aware that
only the cards considered pro-level by Eye-Fi will do Ad Hoc
transfers.
Enabling Uploads on the D300S – Here are the screens and
steps to Enable or Disable Eye-Fi upload (see Figure 5-45):
1. Choose Eye-Fi upload from the Setup Menu and scroll
right.
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