SanDisk, you make me concerned about your product quality. SanDisk SSD Dashboard is a first-party software, nevertheless, it confuses customers, makes inaccurate calculation. Currently the latest version is 1.4.1, release date July 20, 2015 as shown here but you have not fixed it for quite a long time. Unless my SSD is from a batch of manufactured defective drives, you should resolve it ASAP.