About Lexar SD 633X Speed :
32GB is U1,64GB,128GB,256GB,512GB 1TB is U3633X 32GB Class 10, UHS-I (U3),(Max up to 95MB/s read, 20MB/s write)633X 64GB Class 10, UHS-I (U3),(Max up to 95MB/s read, 45MB/s write)633X 128 GB Class 10, UHS-I (U3),(Max up to 95MB/s read, 45MB/s write)633X 256GB Class 10, UHS-I (U3),(Max up to 95MB/s read, 45MB/s write)633X 512GB Class 10, UHS-I (U3),(Max up to 95MB/s read, 45MB/s write)633X 1TB Class 10, UHS-I (U3),(Max up to 95MB/s read, 70MB/s write)
About Lexar SD 667X speed:
667X 64GB Class 10, UHS-I (U3),(Max up to 100MB/s read, 90MB/s write)667X 128 GB Class 10, UHS-I (U3),(Max up to 100MB/s read, 90MB/s write)667X 256GB Class 10, UHS-I (U3),(Max up to 100MB/s read,90MB/s write)
Sony a7r2,Panasonic GH5 and Canon 5d mark4 can't use the sd card. If you test the card,please use USB 3.0 reader card and use desktop computer behind blue real USB 3.0 interface,it can reach the maximum speed.
About SD 633X new version and old version:
32GB,64GB and 128GB is new version256GB is new or old versions random shipping512GB and 1TB is old version
About the black color usb3.0 :
The black color usb3.0 in the picture is SD and Micro sd 2 in 1 card reader,it max support 512GB memory card.
About the red color C396 usb3.0 :
The red color C396 usb3.0 in the picture is SD and Micro sd 2 in 1 card reader,it max support 512GB memory card.
All product designs undergo extensive testing in the Quality Labs, facilities with more than 1,100 digital devices, to ensure performance, quality, compatibility, and reliability.
Recover files with Image Rescue software:
Professional 633x SDHC/SDXC UHS-I cards include the latest version of Image Rescue software. Image Rescue recovers most photo and select video files, even if theyve been erased or the card has been corrupted. The software is available for free download with purchase of the card.
Save time with dramatically accelerated workflow:
The high-speed performance of Professional 633x SDHC/SDXC UHS-I cards dramatically accelerate your workflow from start to finish, so you can save time and get back to the business of photography.
Capture extended lengths of video with high-capacity options:
With growing HD, 3D, and 4K video capabilities, you need high-performance cards you can rely on, and high-capacity options to keep you shooting longer without changing cards. The Professional 633x SDXC UHS-I card makes that easy, providing you with large capacity options up to 512GB.
Shoot high-quality images and 1080p full-HD and 3D video:
Whether youre using a mid-range DSLR, HD camcorder, or 3D camera, youll be able to leverage the latest photo and video features available for shooting high-quality images and stunning 1080p full-HD and 3D video.
High-speed performance you can trust:
Whether youre a professional photographer, videographer, or enthusiast, Professional 633x SDHC/SDXC UHS-I cards provide performance you can trust. These high-speed, Class 10 cards leverage UHS-I technology (UHS Speed Class10 for 32GB-1tB capacities) to provide a read transfer speed up to 633x (95MB/s).
Warranty and support:
All Professional line memory cards come with a limited warranty and are backed by expert technical support.
When memory matters, the choice is us:
With a long history in the industry, we know memory. We move quickly with technology to design the solutions you need, and work with device manufacturers to make sure our products are compatible. Then we stand behind them with outstanding warranties and helpful customer service. Were dedicated to performance, reliability, and expert support, so when it comes to storing the memories that matter, trust us. Maximum read transfer, write speeds lower. Speeds based on internal testing. Actual performance may vary. x=150KB/s. Actual sustained speed may vary depending on host device. Performance may be lower depending on host device, interface, usage conditions and other factors. Please don't use cheap card reader to test memory card, speed of memory card will be reduced by low quality card reader. Image or other data recovery is not 100% guaranteed. NOTE: Product appearance, software offerings, and packaging may vary depending on ship date and available inventory. Some of the listed storage capacity is used for formatting and other purposes and is not available for data storage. 1GB equals 1 billion bytes.