... Power Supply, product dimensions:110x78x38mm 40W, 15V,2.7A Switching Power Supply, product dimensions:110x78x38mm ... keyboards and mice, speakers include portable speaker, 2.0/2.1/5.1 speakers, iPod speakers, USB ... David Yan had been 15 years experience in software development and hardware designing, with advanced R&D ... R&D members, we can release 1 - 2 new products per month. We are also cooperating ...