Features: 1. Built in DSP audio amplifier module: built in DSP audio amplifier module can increase the volume by 15%. 2. Drive free installation: drive free installation, plug and play. 3. Compatible with two kinds of headphone interface: it can be compatible with single or double plug headphone interface. Description: Lightweight game equipment, light and simple, easy to carry. Specifications: Color: Black Product attribute: external USB computer game sound card Sound card sound effect: virtual 7.1 channel Sound card line length: 7.5 cm Total length of sound card: 18 cm Plug Specification: USB Package Included: 1* Game sound card 1* Specification 1* Quality aurance card Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.