This is a premium Rocstor 2in1 TypeC card reader which allows to connect 2 memory cards into TypeC/Thunderbolt supported host PC/Laptop/Smart Phones,etc. simultaneously with data transfer up to 104Mbyte/s. With this product, you can transfer videos/pictures from memory cards to your TypeC host or read data in the memory card with large capacity in seconds, sharing all your interests with your friends. Specifications. Color Black. Storage Temperature 10 70 C. Storage Relative Humidity 10 90%. Operating Temperature 0 45 C. Operating Relative Humidity 10 90%