One of the pair works fine, the second failed before it even had data on it. It shows up as a drive but cannot be mounted and won’t take files.Thinking this was a fluke, I foolishly bought another set. Both worked fine, then one failed with data on it. It isn’t even recognized as a device when plugged in.I always thought SanDisk was a good name, but I’m doubting it with these apparent poor quality standards. It’s a shame rare electronic materials were used in something bound for the e-waste bin.

This is not the most recent version as described online. It does not have the SanDisk software specified in the description. It does have a different (I think earlier) version of the software. I could still use it but I had to find instructions online. SanDisk seems to have a bad reputation in terms of updating its software. I have had SanDisk flash drives for many years and I still find the password protected software frustrating to install but okay to use. I have not had problems with updated software. It still does for me what I want it to do. Obtaining a SanDisk with the newer software was not worth the inconvenience of returning this one. It will probably make no difference to my usage of it. But it is something that you should be aware of.

Just want to clarify some of the comments made by quite a few reviewers for both this product and other storage products.1. This X brand USB company ripped me off because the actual capacity is less than the stated capacity. That's because flash drive and hard drive manufacturers show capacity using decimal whereas computers use binary so what the computer calculates is less than the what the manufacturer states. I still don't know why manufacturers do that since these devices are intended for use with computers BUT it's something ALL manufacturers do so no good bagging a particular brand for 'ripping you off'.2. The device is formatted for FAT32, not NTFS, so it can't handle large files. Why hasn't the stupid manufacturer pre-formatted the device for NTFS. That's ... MoreJust want to clarify some of the comments made by quite a few reviewers for both this product and other storage products.1. This X brand USB company ripped me off because the actual capacity is less than the stated capacity. That's because flash drive and hard drive manufacturers show capacity using decimal whereas computers use binary so what the computer calculates is less than the what the manufacturer states. I still don't know why manufacturers do that since these devices are intended for use with computers BUT it's something ALL manufacturers do so no good bagging a particular brand for 'ripping you off'.2. The device is formatted for FAT32, not NTFS, so it can't handle large files. Why hasn't the stupid manufacturer pre-formatted the device for NTFS. That's because the device can be used out of the packet on both MAC and PC OS. Read the packaging, it does not say pre-formatted for a PC does it?