- Unique?genuine 7.1 surround sound output via SPDIF?optical cable ports- Perfect for games、 movie、?music、 and voice/video chats- Excellent enhancement for?both PCs and?laptops --?upgrade to 7.1?digital optical?surround sound system without?disassembling anything- USB 2.0 data interface- Digital optic fibre、 SPDIF input and output ports- Also features analogue 3.5mm minijack 5.1 output (front out、 rear out、 center/base out)- 3.5mm microphone port                                                                                                                                Dimensions: 3.62 in x 2.36 in x 0.87 in<br />Weight: 4.9 oz