Sandisk Extreme Pro 128GB SDXC UHS-II V90

Sandisk Extreme Pro 128gb memory cards read speeds of 300MB/s and a maximum write speed of 260MB/s. The Extreme Series cards are rated UHS Speed Class (U3) and can sustain at least 30MB/s continuous write speed for recording HD ,4K and 8K video. To get the most speed out of this card a UHS-II device is required. The card can be used in UHS-I and Standard SD devices but the speed will be reduced. The extra row of pins on the back of the card provides the UHS-II interface, while the traditional row of pins allows it to work at standard SD and UHS-I bus speeds. When used in a UHS-I device the card is limited by SDR104 bus mode which supports speeds up to 104MB/s.