EXTERNAL SOUND CARDMicolindun external sound card has its own audio chip, can turn one USB port to several 3.5mm ports, so can connect 3.5 mm audio devices like headphones, headset, speakers, microphone, etc. Support single plug and dual plug headphone at the same time, no adapter needed. REPLACE FAULTYDEVICESPerfect to replace a faulty sound card, damaged 3.5mm audio port, or a broken USB audio adapter. With textile flexible cable of 1.2m, you can put the sound card on your desk, so easily plug your devices without bending over.