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About product and suppliers:
        1,324 otg mobile card reader products are offered for sale by suppliers on Alibaba.com, of which card reader accounts for 14%, computer cables & connectors accounts for 7%, and access control card reader accounts for 2%. 

A wide variety of otg mobile card reader options are available to you, such as external, internal. You can also choose from usb, expresscard slot otg mobile card reader, as well as from sm card, sd card, and memory stick card otg mobile card reader, and whether otg mobile card reader is all in 1 / multi in 1, or single. 

There are 530 suppliers who sells otg mobile card reader on Alibaba.com, mainly located in Asia. The top countries of supplier is China, from which the percentage of otg mobile card reader supply is 100% respectively.