This External Sound Card connects to your computer's USB port and offers all the benefits. FEATURES: 1. The multi ports splitter is designed with stereo sound adapter combo (2 headphone + 1 microphone) especially for laptops, tablets, and ultrabooks and expands one USB 2.0 high-speed port into three easily. 2. It is also a highly flexible audio interface, which can be used with laptop system; Simply plug the sound adapter into your USB port, and then plug your headphones into the Adapter. 3. Designed with 3-ports, this compact USB 2.0 high-speed hub is small enough for travel, and 4.capable enough to meet your connectivity needs. 5. Ergonomic design, humanized technology considerations, stable performance, durable and reliable. 6. No driver needed, plug and play, add USB 2.0 ports to your computer easily.