Sandisk microSDXC 256GB Extreme UHS-1 U3 V30 4K Ultra HD A2 compatible with JNH original SD adapter

* * * The maximum reading speed of this product is 160MB / s, which is achieved under the conditions when it is connected to the USB3.0 port in combination with 's card reader SDDR-B531. Please note that the maximum reading speed is 100MB / s if the conditions are not met.;Regarding the use of this product 1) Please use an SDXC compatible device. 2) After setting up this product on the equipment used, it must be formatted on the same equipment. 3) Use a file system called exFAT for the microSDXC card. Use in FAT16 and FAT32 formats is not covered by the guarantee. * Correct knowledge is required to use the FAT16 and FAT32 formats. Customers who use the product without accurate information often have problems such as data loss and incorrect capacity recognition.;4) If you suspect that the capacity is insufficient, we strongly recommend using the SD Formatter provided by the SD Association. SDFormatter identifies the physical capacity of the SD / SDHC / SDXC card and is optimized with the appropriate file system for best performance. When this function is used, the memory card is restored to its original physical capacity.;* Measure with a USB3.0 and UHS-I compatible card reader on a PC equipped with a USB3.0 interface during the speed test. In order to demonstrate the high-speed performance of UHS-I, not only the card side but also the host (personal computer, camera, card reader, etc.) must support UHS-I. Therefore, a device equipped with USB3.0 and a card reader compatible with USB3.0 / UHS are required to measure the speed of the high-speed SD card. If you don't, you won't be able to get the full speed of the card.