SanDisk Extreme Pro micro sd class 10 U3 A2 V30 1TB 400GB 512GB 256GB 128GB-Micro SD Cards-Memory Cards-hkjaview

ID: 6316

64GB = approximately 58GB-60GB

128GB = approximately 119GB-120GB

1TB= approximately 950GB-960GB

This is calculation difference between manufacturer and your PC, please Google 'Memory card capacity' to get more information.

Your PC says 1GB = 1.073741824 Billion bytes where Market Defines 1 GB = 1.00 Billion bytes.

Steps 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 MicroSD card, speed of MicroSD 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 etc. Low quality device will 100% slow down card speed,1MB=1000KB.