Windows 8 is basically a reskin of Windows 7 and so your Tascam us-122 should work with the Windows 7 drivers, but if those don't work you can try the vista drivers which tend to work on Windows 7. I would suggest upgrading to the mk2 because it has far better support and will continue to receive it, Tascam has very little support for the original and I doubt they will release a specific windows 8 driver for it.