Canon PowerShot SX400 IS Black Manual (en)

Compatible Memory Cards
The following memory cards (sold separately) can be used, 
regardless of capacity.
SD memory cards*
SDHC memory cards*
SDXC memory cards*
Eye-Fi cards
*  Cards conforming to SD standards. However, not all memory cards have 
been verified to work with the camera.
About Eye-Fi Cards
This product is not guaranteed to support Eye-Fi card functions 
(including wireless transfer). In case of an issue with an Eye-Fi 
card, please check with the card manufacturer.
Also note that an approval is required to use Eye-Fi cards in many 
countries or regions. Without approval, use of the card is not 
permitted. If it is unclear whether the card has been approved for 
use in the area, please check with the card manufacturer.