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About product and suppliers:
        Alibaba.com offers 2,172 500w power source products. About 18% of these are switching power supply. 

A wide variety of 500w power source options are available to you, such as free samples, paid samples. 

There are 2,172 500w power source suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 500w power source respectively. 

00w power source products are most popular in North America, Southeast Asia, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 698 with ISO9001, 497 with Other, and 128 with ISO14001 certification.