Zectron 32GB Professional CF Compact Flash High Speed Memory Card for Canon XF100 EOS 50D DIGITAL CAMERA Zectron Digital 32GB High Speed CF Compact Flash Memory Card x 300 5 year warranty Data is not lost when power is turned off Transfer Rate: 45 Mbp/s Max speed rating: 300x Super-high speed USB 3.0 data transfer rate (when used with a compatible USB Card Reader) and Fully compatible with the SDA 2.0 specification