Sandisk Ultra Flair USB 3.0 Flash Drive 64 GB.

To day I bought Sandisk Ultra Flair USB 3.0 Flash Drive 64 GB. When attached with PC it shows 31.9 GB, Would some one please advise how it comes that. Although it is printed on packing & on USB 64 GB. 

check the drive itself. the marking should indicate the capacity. check to make sure it was not some sort of packaging mistake. 

if the drive itself shows 64GB then you can try using the format tool in the link below. it may be able to recover the full capacity

https://kb.sandisk.com/app/answers/detail/a_id/19258/

It could also have been used and incorrectly reformated before selling.  If so drlucky’s link may solve the problem.

It’s also possibe it’s a counterfeit.

If unable to get it to 64 GB return it to seller.