Features: 3 hole output is used at the same time. It have three holes: Headsets, 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. Connection two headphones at the same time to support double-port (Headsets) Headsets and single-port (mobile phone) Headsets sound output at the same time, and share music with friend. 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. Specifications: Component:ABS+Metal Color:Black/Black Gray Size:Approx.6.2x4cm/2.44x1.57inch 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.