... dimensions:110x78x38mm 40W, 15V,2.7A Switching Power Supply, product dimensions:110x78x38mm.High reliability, low cost.Built-in EMI filter.100 ... ....................47~63Hz Line regulation (full load).......≤±0.5%Output voltage adjust range.......105~120%Current limtiting,Auto recoveryWithstand ... computer keyboards and mice, speakers include portable speaker, 2.0/2.1/5.1 speakers, iPod speakers, USB/SD ...