There is a similar program called H2testw that can test flash drives and memory cards on Windows. (The link to F3 mentions H2testw, but anyone who doesn't click

There is a similar program called H2testw that can test flash drives and memory cards on Windows. (The link to F3 mentions H2testw, but anyone who doesn't click through will miss it.) If you get a "great deal" on a flash drive or memory card at certain online store sites like AliExpress, there is a very, very good chance that the product is counterfeit. Sadly, this is a well-known scam that many people are taken in by.