The Atlas Ultra UHS-II SDXC 64GB memory card from OWC / Other World Computing has a storage capacity of 64GB and utilises the UHS-II bus to support advanced DSLR/mirrorless features such as continuous shutter bursts and fast shutter speeds, as well as raw and JPEG capture. The Atlas Ultra UHS-II 64GB SDXC memory card from OWC / Other World Computing has a storage capacity of 64GB and utilises the UHS-II bus to support advanced DSLR/mirrorless features such as continuous shutter bursts and fast shooting, as well as raw and JPEG capture. This card is also suitable for video capture, including 4K, Full HD and 3D video. It can reach maximum sequential read speeds of up to 300MB/s and maximum sequential write speeds of up to 250MB/s. Thanks to the V90 speed class, minimum sustained write speeds are guaranteed not to drop below 90 MB/s. To facilitate the card's use in almost any environment and to ensure the safety of its contents, OWC has built the Atlas Pro with a bend-, shock- and X-ray-resistant design, as well as an IP67 rating, which means it is dust- and water-resistant. It is also able to withstand extreme temperatures from -13 to 185°F. UHS-II media achieves its speed through an additional row of pins, and although this card is designed for UHS-II / V90 compatible cameras, it can be used in devices that do not support UHS-II / V90. However, be aware that the card will be set to the speed class and bus of the device, such as UHS-II and V60, which supports minimum write speeds of 60 MB/s, UHS-II and V30, which supports minimum write speeds of 30 MB/s, or UHS-I and U3, which also supports minimum write speeds of 30 MB/s. If your device does not support U3, this card is compatible with the U1 and Class 10 standards, each of which provide minimum write speeds of 10 MB/s.