StarTech.com USB Stereo Audio Adapter External Sound Card with SPDIF Digital Audio and Stereo Mic. Audio output channels: 5.1 channels, Audio quality: 24 bit, Line-out Signal-to-Noise Ratio (SNR): 91 dB. Host interface: USB. Cable length: 0.4065 m, Chipset: C-Media CM6533, Product colour: Black. Windows operating systems supported: Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64,..., Mac operating systems supported: Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion. Weight: 33 g, Width: 46 mm, Depth: 47 mm