JVC Everio GZ-HM300 Basic User's Manual page 9

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To remove the card
Push the card inward once, then pull it out straight.
(Base)
.
NOTE
Operations are confirmed on the following SD cards.
Manufacturer
Video
Still Image
Using cards other than those specified above may result in recording failure
●
or data loss.
Panasonic, TOSHIBA, SanDisk, ATP
Class 4 or higher compatible SDHC card (4 GB to
32 GB)
SD card (256 MB to 2 GB), SDHC card (4 GB to
32 GB)
For more information, refer to the Detailed User Guide
http://manual.jvc.co.jp/index.html/
9