It works well with both my laptop and old DSC-HX10 camera which was purchased nearly 9 years ago. It gives a boosted 100+MB/s reading speed during a short time and then stays at 90MB/s later. The writing speed on my laptop built-in card reader keeps 65MB/s. Its usable space is about 119GB on Windows 7. It's a good deal for photographers who have a limited budget on cards.