SanDisk Extreme PRO SD Card: 256GB-128GB, 4K

Product Information:

Brand：Sandisk / Flash Memory Type： SD Card  / Memory Storage Capacity：64GB 128GB 256GB

Read Speed：UP TO 200MB/  / SWrite Speed： UP TO 90MB/S  / Speed Class：Class 10 U3 A2 V30

 

 

Notice:

About capacity:

64GB=approximately 57GB-60GB

128GB=approximately 115GB-119GB

256GB=approximately 230GB-238GB

 

The ex-factory capacity of SD Card products is calculated as 1MB=1000KB and 1G=1000MB. The operating system USES binary algorithm, namely 1MB=1024KB,1GB=1024MB.

Therefore, the display capacity of SD Card products is about 90% of the nominal capacity, which is a normal phenomenon.

 

Warm Tips

 

How to verify the Capacity and Speed of the memory card?

1. Please use quality USB 3.0 card reader to verify all memory card by H2testw on PC. Real memory card should pass H2testw with no error.

2. Please don’t use cheap card reader to test SD card, speed of Micro SD card will be reduced by low quality card reader.

3. Micro SD memory card speed is greatly affected by card reader and the capacity you choose , USB port ect. Low quality device will 100% slow down card speed,1MB=1000KB.