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About product and suppliers:
        Alibaba.com offers 2,958 500ma output products. About 12% of these are switching power supply, 4% are inverters & converters, and 4% are charger. 

A wide variety of 500ma output options are available to you, 

There are 3,274 500ma output suppliers, mainly located in Asia. The top supplying country or region is China, which supply 100% of 500ma output respectively. 

00ma output products are most popular in United States, United Kingdom, and South Korea. 

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Minimum Order: OK