The SanDisk Extreme Pro SDXC UHS-II has the SD-type card form factor which means it fits in the memory card slot of a wide range of cameras. It’s a UHS-II card, which makes it compatible with the latest cameras with SD cards slots, but it can also be used in cameras with UHS-I card slots.
According to the manufacturer, the SanDisk Extreme Pro SDXC UHS-II has a maximum write speed of 260MB/s and a maximum read speed of up to 300MB/s. That makes it suitable for use when recording 4K video as well as shooting long sequences of stills at high frame rates.
SanDisk currently offers the Extreme Pro SDXC UHS-II in two capacities, 64GB and 128GB. A 256GB card is also coming to the market soon. There’s also a 32GB card which has the same specifications, but strictly speaking that’s an SDHC card rather than an SDXC card.
Using two 128 gig Sandisk 300mbps UHS-ii SD in my R6. Loving the performance … but expected a more solid and robust one as i paid around $440 for two.
My last sony UHS 2 M series failed with hundred of photos… never leaving Sandisk again!!!!!!!