Lexar. When Memory Matters.™ The Lexar Professional 300x CompactFlash® (CF) memory card provides reliable professional-level performance with a guaranteed minimum sustained write speed of 300x (45MB/s) so you can capture and store high-quality images and video with your DSLR camera. (300x speed is based on a TestMetrix CFA certified tester in UDMA mode. Actual sustained speed may vary depending on host device.) This means you can keep shooting whether you’re capturing high-quality images or video. This high-speed performance improves transfer speeds from card to computer reducing your post-production time making it a top choice among professional photographers. The Lexar Professional 300x CF card includes the latest version of award-winning Lexar Image Rescue™ software. Image Rescue 4 provides reliable recovery of most photo and video files; even if they’ve been erased or the card has been corrupted.Exceptional Performance Reliability and Compatibility. The Lexar team works with major camera manufacturers to ensure all Lexar memory cards are compatible with their digital cameras—from the simplest to the most complex. The cards are also tested in the Lexar Reliability Lab a facility with more than 800 digital cameras and memory card devices to further ensure compatibility and performance.