From Amazon
Lexar Professional 633x SD Card 256GB, SDXC UHS-I Card, Up To 95MB/s Read, for Mid-Range DSLR, HD Camcorder, 3D Cameras, LSD256CBEU633 (Product Label May Vary)
CCL Computers AMD
Lexar High-Performance 633x BLUE Series 256GB SDHC UHS-I (Class 10)
OnBuy
Lexar Professional 633x 256GB SDXC UHS-I Card