Feature: 1. Adopts the built‑in HS‑100B chip, stable transmission, low power consumption, good chip without external power supply, to avoid electromagnetic interference in the chassis, to avoid the original part of the system noise. 2. The interface insulation layer is made of high‑quality PVC environmental protection material, with built‑in shielding layer. The shell is made of aluminum alloy, and the surface is treated with oxidized frosted processing, making the product wear and durable. 3. Plug and play, automatic installation drive, convenient and fast, no need to dismantle the machine, stable transmission. 4. Compatible with USB2.0 pure digital audio output, virtual 7.1 channel processing capability. 5. The system does not need to install the driver, simple operation as long as the headphones or speakers, beautiful music can be immediately appreciated. Compact size, easy to carry. Specification: Condition: 100% Brand New Item Type: External Sound Card Material: Aluminum Alloy Channel: 7.1 Channel It is suitable for mobile phones, laptops and tablets 24PIN connector, 12PIN up, 12PIN down, general positive and negative Compatible with USB2.0 pure digital audio output, virtual 7.1 channel processing capability The system does not need to install the driver, simple operation as long as the headphones or speakers, beautiful music can be immediately appreciated. Compact size, easy to carry.. Package List: 1 x External Sound Card