Supported hardware - nodesign/weio GitHub Wiki
Bluetooth
Bluetooth 4.0 USB dongle that we tested and that is fully supported by WeIO (from version WeIO 1.1+) is GBU21. With this dongle it was tested that bluetooth works well in standard mode and as iBeacon.
http://www.amazon.com/IOGEAR-Bluetooth-Micro-Adapter-GBU521/dp/B007GFX0PY
Soundcard
USB soundcards are pretty well standardized hardware today. We tested two ordinary ones (supported from version WeIO 1.0+).
and
We strongly recommend the first one because it's housing is small and will not provoke problems inserting it into WeIO