The Vantec NBA-100U USB 5.1 Channel Audio Adapter is an amazing audio accessory for any computer with a USB port. Its 5 audio connections provide both great stereo input and 5.1 channel surround sound output performance from your laptop or desktop without installing additional hardware. The NBA-100U not only combines high quality audio recording and playback capabilities but also allows the connection of most popular audio gear such as microphones, home stereos, musical instruments, and powered speakers to your USB capable computer. Upgrade to 5.1 channel digital surround sound with Vantec USB external 5.1 channel Audio Adapter.