... Consumption, Suitable for Desktop & Notebook PC *Supports:SD(HC),SD(XC),Mini SD,MMC,MMC 4.0,MS,MS Pro,MS Duo,MS Pro ... . Please make sure the switch is for USB or for SD. 4. The photos must save at "DCIM" folder. 5. For ipad ... .22 support 100mA current , but the 4.2 only 20mA current. your usb or SD card current is overload 20mA,you need ...