Is this micro SD card genuine?

Yes—if you're asking whether a particular microSD card is genuine, I can help check it, but I would need to see the card first. Please upload a clear photo of the front and back of the microSD card and its packaging.

Meanwhile, here are the best ways to verify a card:

1. Check the physical markings

Look for spelling mistakes, poor-quality printing, unusual fonts, missing manufacturer information, or inconsistent logos. Some manufacturers publish specific guidance for identifying counterfeit cards.

2. Check the advertised capacity

A major counterfeit-card trick is making a small-capacity card report a much larger capacity. For example, a card may claim to be 256GB while physically containing far less storage.

The SD Association defines SDHC as cards above 2GB through 32GB, SDXC as above 32GB through 2TB, and SDUC as above 2TB through 128TB.

3. Perform a full capacity test

The most useful practical test is a write-and-verify test. On Windows, H2testw can write data across the card and verify whether it can actually store the advertised capacity.

On macOS or Linux, F3 (Fight Flash Fraud) can be used for a similar purpose.

Important: A full test can overwrite existing data, so back up anything important before testing.

4. Don't rely only on the reported capacity

If Windows, Android, or another device says the card is 512GB, that doesn't prove it's genuine. Counterfeit cards can modify their controller firmware so the operating system reports a false capacity.

5. Check the seller

An unusually low price, questionable packaging, or an unknown seller can be warning signs. Buying from an authorized or reputable seller substantially reduces the risk of receiving counterfeit storage.