Ricoh PENTAX K-3 Mark III Faq page 41

via a USB cable.
- Do not bend an SD Memory Card or subject it to violent impacts. Do not leave
cards in locations where they will be exposed to water, moisture, or high
temperatures.
- Avoid using or storing cards in places where they may be exposed to static
electricity or electrical interference.
- Data saved to SD Memory Cards that have been left unused for long periods of time or that ha
ve been damaged may become unreadable and lost.
Important data should be backed up regularly.
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