Works out of the box with MS-Windows-7,8, and 10 and Apple Mac OS-X Yosemite and El Capitan. Toslink connection works with MS-Windows and Mac OS-X. Plug and Play, No drivers or kexts to install. Able to connect the toslink connection to my 7.2 surround sound AV receiver for true 7.2 Surround sound. My AV receiver was able to process the toslink digital signal in ( DTS, THX, Dolby Digital, 7 channel surround sound, Pro Logic, etc. They all worked.

I have tried several of these USB sound devices and have found this Behringer to be one of the best. It just works with any Operating system. No need to install Drivers or Kexts. Download software here: [.] Make sure to buy the cables. Update (March 31, 2018) The adventure continues.

I made one last attempt with this device. In Windows 10 I removed the 'Behringer USB audio driver 2.8.40' and allowed Windows 10 to install the 'USB Audio CODEC' driver. Buried in the Audacity documentation is a description about accessing the properties of this driver and going thru that I found there is a way to enable 2 Channel recording.

For my Surface Book the built in sound system is from Realtek. The Audacity doc specifically mentions Realtek as one that has issues with the initial install of the 'USB Audio CODEC' driver. So, here is the required magic if you attach the UCA202 to a Surface Book computer. Before turning on the laptop attach the UCA202 to a USB port. Start the computer. In lower right of screen right click the speaker icon and select 'Recording devices'. In the 'Sound' dialog right click on the 'USB Audio CODEC Microphone' and choose properties.

Low-Latency 2 In/2 Out Usb/Audio Interface With Digital Output. Drivers or Kexts. Download software. The 'Behringer USB audio driver 2.8.40' and.

Click on the 'Advanced' tab. In the drop down box choose '2 channel, 16 bit, 44100 Hz.' Or whatever 2 channel option you want. Be sure Audacity is set to the same rate. I'm raising the rating to three stars since the problem I've encountered might be confined to the Realtek sound system. So far the UCA202 has worked without flaw, it’s the setup that can be an issue.

It is advertised as plug and play which is not entirely true. Of course, that's part and parcel for most Windows apps and devices. Update (March 30, 2018) - I'm not having much success with the UCA202 using the 'Behringer USB audio driver 2.8.40'.

With it I am at least recording both input channels of the UCA202 but Windows 10 (most recent version) running on a Surface Book is no longer stable. I'm using Audacity as the sound processor and have selected the 'Inline Behringer' input set to stereo but the computer completely freezes after about 45 minutes of recording. CTRL-ALT-DELETE is not available and I have to force a power shutdown. Searching the internet yields many places with this driver. None of those places are associated with Behringer so maybe can't be trusted. The driver supplied on the Behringer web site does not work. The driver installed by Windows 10 does not cause Windows to crash but then only the left channel of the UCA202 delivers a signal so it essentially does not work either.

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I suspect the issue is that the 'Behringer USB audio driver 2.8.40' driver derives from the Windows 7 and Vista days and is probably not compatible with Windows 10. My situation might be unique, not the first time, but it is frustrating that the unit does not work 'hassel free' as advertised and that the vendor is not supplying a driver that works in Windows 10. So - I'm returning the unit. (Entry on March 29, 2018) Working now.