1. MOWEEK Official Aliexpress Store offers 100% genuine memory card with 30 years warranty.
2. Please use quality card reader to verify memory card on PC. (The most reliable software to verify memory card is H2testw). Please don’t use cheap card reader to test micro SD card. The speed of the micro SD card will be reduced by low quality card reader.
3. Micro SD card speed is greatly affected by card reader, adapter, USB port, etc. Up to 40MB/s read speed; write speed is slower. Based on internal testing, performance may be lower depending on host device, interface, usage conditions and other factors.
1MB = 1,000,000 bytes.