... connecting with PC,LED light Portable USB Mini Speaker for PC,Laptop,Mobile phone1.Music source:3.5mm audio LINE-IN Simply ... turn on, LED light display red color4. Under lipWhen play music, you can open the under lip to make speaker stand ... voltage:4.2VS/N Ratio: 90dBImpedance:8 ohms Portable USB Mini Speaker for PC,Laptop,Mobile phone