PNY 256GB PRO Elite Class 10 U3 V30 SDXC Flash Memory Card - 100MB/s, 4K UHD, Full HD, UHS-I, Full Size SD

It's a really nice card and has tons of storage. Works just like any other card, but not necessarily for older cameras like my Nikon Coolpix P900. I was disappointed it was not compatible with my camera, but that is the cameras fault, not the card.

I'm using this 1TB card in the SD slot on my laptop as an extra drive. It comes exFAT formatted which is an advantage over the older FAT32 if you're going to be dealing with files over 4GB in size. The card is rated at “up to” 100MB/sec read and “up to” 90MB/sec write speeds. I took a screenshot while I was transferring a single 644MB file from the laptop's internal SSD to the card. Transfer speed stayed at about 80MB/sec and it took around 9 seconds to transfer the file. I transferred the same file back from the card to the internal SSD and it literally happened too fast for me to even grab a screenshot of the transfer in progress. Very impressive. I've got music and video files backed up all over the place. This little card provides even more redundant storage that is easily accessed. It's still a little pricey – if you're willing to settle for USB 3+ transfer speeds, you can get a 1TB external SSD for about half what you'll pay for the SD card. The speed on this SD card, though, is amazing and it you are using an HD or 4K video camera that records on an SD card, you'll love this.