Features: 2 hole output is used at the same time. It have two holes: earphone and microphone. Connection double hole Headsets and desktop computer to communicate with teammates online and in real time, so as not to fall behind in team battle. The sound effect is making listening to music and watching movie more immersive. Suitable for most headphones and microphones; Supports stereo output and provides immersive sound effects. Easy to use, plug and play, no need to drive installation. Suitable for users who need to improve computer sound effects, such as gamer, online conference participants. This adapter includes a 3.5mm headphone and microphone input, ensuring compatibility across most mobile devices. Specifications: Component:ABS+Metal Size:Approx.12m/4.72inch Package Includes: 1Pc External Sound Card note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.