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microSDHC Card – Class 10 — SDC10
My flash card is not seen by my device or shows a card error in the device but it works OK in another device. Why?
There is a incompatibility between the card and the device. This can be due to the device not supporting the capacity of the card or the card uses a newer technology than the device is able to use. In some cases, there are updates to the device that allow it to read newer or larger cards.
Please check with the device manufacturer or on our website to see what cards are supported with your device.
FAQ: KFC-012711-GEN-04
PENTAX K-5 Firmware Update Version 1.16
Changes to V1.02
• Compatible with SDXC memory card.
* Transfer rate is not compatible with UHS speed class.
• All ISO sensitivity setting can be used on Bulb mode.
• Improved functional sequence for Contrast AF and improved total speed until in focus.
https://www.sdcard.org/consumers/speed/
See the U1 on the card?????
http://www.kingston.com/us/flash/microsd_cards#sdc10 Not all devices are created equal it is up to you to research and select what is appropriate for your device.