Memory Card Ultra Class 10About speed:
★For Sandisk micro sd card ,all are Class 10.
For OEM micro sd card,all are with the best quality chips,2G and 4G are Class 6,8G-128G are Class 10.
★Adapter is speedless. Please use quality USB 3.0 card reader to test all memory cards by H2testw on PC. Real memory card should pass H2testw with no error.
★Micro SD memory card speed is greatly affected by many factors card reader,interface, computer condition , test software ,systems, etc.Low quality device will 100% slow down the speed.