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Maximum read speed:90M/s (usb 3.0 card reader and on the usb 3.0 port of computer)

Maximum write speed:25M/s  (usb 3.0 card reader and on the usb 3.0 port of computer)

i hope all buyer can understand..if not ..don't buy  thanks 

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100% Original Toshiba Memory Card 16G 32GB 64G128G C10 Micro SD Card TF Trans Flash Card SDHC SDXC UHS-U3 Class10 Free Shipping

Package Contents:

TOSHIBA Micro SD with Retail Package*1

Speed:

8G  class 4

16GB/32GB        -Class 10-SDHC

64GB/128GB      -Class 10-SDXC

About capacity:

16GB=approximately 14GB-15GB

32GB=approximately 28GB-30GB

64GB=approximately 58GB-60GB

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

Features:

8GB/16g/32g/64g/128g Class 10 speed;

Original high quality flash memory

Warm Tips:

TOSHIBA Official Store offers 100% genuine memory card with 30 years warranty

Please use quaity card reader to verify all memory card by H2testw on PC

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

The most reliable software to verify memory card is H2testw

**Micro SD card speed is greatly affected by card reader, adapter, USB port etc. Low quality device will 100% slow down card speed.

**Up to 90MB/s read speed; write speed lower. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.

Toshiba U3 Memory Card 128Gb 64Gb Sdxc Max Up 90M/S Micro Sd Card Sdhc-I 32Gb 16G Class10 Official Verification 8G Is Class4