Sandisk microSDXC 256GB Extreme UHS-1 U3 V30 4K Ultra HD App Optimized With A2 Compatible SD Adapter

Manufacturer: SanDisk; Type: microSDXC UHS-I card; Capacity: 256GB; U3 V30 4K Ultra HD, application performance A2 compatible, launch apps faster. With SD adapter for data transfer, overseas packaged products, no domestic support. JNH shop domestic from Amazon purchase history. * For the period, please check the JNH sticker affixed to the product package. * A JNH special seal is required to receive the item. If there is no JNH seal, it will not be covered. Please keep it in a safe place.;* To experience the speed of 160MB / s, please check the following two points: 1) Please check in advance whether the speed of the USB port installed in your computer is 160MB / S or higher. .. 2) Please prepare Sandisk's SDDR-B531 card reader. * At the moment (2019/06), the only UHS-1 card reader that has reached 170MB / sec is Sandisk's SDDR-B531. Handling of large-capacity flash memory: If you insert a microSDXC card into a product that does not support the SDXC standard, the data in the microSDXC card will be damaged. In that case, it may be formatted and recognized by the SDHC standard, but the data in the microSDXC card will be damaged regardless of this operation. Never plug it in.;When dealing with large files (4GB and above), check the file size limit of the file system. FAT32: 1 File maximum capacity 4GB, files larger than 4GB cannot be saved. Or even a card larger than 64GB can only recognize 32GB. exFAT: Not compatible with old devices. The maximum capacity of one file is 2TB, and files of 4GB or more can be saved. It can be managed even with a 2000GB card.;Regarding recovery of a microSD card with damaged data 1) If you want to use a microSDXC card with damaged data again, you need to insert it into an SDXC standard compliant device and initialize the microSDXC card. .. The saved data will be deleted. Data will not be restored. 2) If the microSDXC card's firmware is damaged when it is inserted into a product that does not support the SDXC standard, it cannot be repaired even if initialization is performed.;* 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 a high-speed SD card. Otherwise, the original speed of the card cannot be fully achieved.