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About product and suppliers:
        Alibaba.com offers 2,004 computer data reader products. About 1% of these are access control card reader. 

A wide variety of computer data reader options are available to you, such as 2gb, ≥ 256mb. You can also choose from black, white. As well as from barcode scanner, sd card, and cf card. And whether computer data reader is free samples, or paid samples. 

There are 2,014 computer data reader suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Malaysia, which supply 99%, 1%, and 1% of computer data reader respectively. 

Computer data reader products are most popular in Domestic Market, North America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 700 with Other, 579 with ISO9001, and 163 with ISO14001 certification.