1. High-quality Sound: This 7.1 sound card supports for AES/EBUIEC60958S/PDIF and true hardware 7.1 channel output, allowing you to enjoy high-quality sound with up to 48KHz sampling rates and support for 32KHz/44KHz/48KHz digital recording. 2. Easy to Use: With support for Win98/ME/2000/XP/VISTA/MACOS91 (2 channels on MAC only), Usb 2.0 sound card is easy to install and use for full-duplex audio streaming playback and recording without the need for a built-in PC sound card. 3. Versatile Connectivity: Equipped with 4 input terminals (including one optical fiber input and two MIC inputs), 5 output terminals, and 1 optical fiber output terminal, USB audio adapter supports a wide range of audio devices and equipment specifications. 4. Fast USB Transfer Speeds: Usb external stereo sound card is compatible with USB 2.0 and downward compatible with USB 1.1, supporting high-speed USB transfer up to 12Mbps. 5. Professional-grade Features: With its advanced features and specifications, 7.1 channel usb soundbox is perfect for professional and home users who demand high-quality audio recording and playback capabilities for their projects and entertainment needs. Model Number:Sound Cards Interface:USB Support channel:7.1 channel Installation method:external Product weight:90g Colour:Black Material:Plastic Size:13x6.3x2.4cm/5.12x2.48x0.94in Package Contents: 1 x independent sound card 1 x fiber optic cable 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.