In principle, the card works, though not very fast. Problem and reason for the devaluation: The manufacturer gives the card fully compatible with the Canon EOS at (in my 60D). This is wrong: The EOS can drive so-called Eye-Fi cards themselves and change eg the WLAN parameters directly.. This does not work with the Transcend card; the corresponding points of the camera menus are grayed out. An adjustment is only possible via PC or iPad app. An email to the customer service of Transcend confirmed me this fact, but one nonetheless held to the assertion of the "full compatibility" firmly and showed up on my relevant objections unapologetic.
Anyone who wants to utilize the functionality of its EOS, this card can not buy and will have on the original Eye-Fi card to dodge (in Germany only limited available) or to the apparently certified derivative of SanDisk. Disadvantage of these two products is the lower memory speed (Class 6 or Class 4 instead of Class 10 in Transcend), which occasionally plays at longer shooting a role.