The pack installation is very simple. The XAUB25511 module works also with any PLC network module. The sound "reconsitué" by XAUB25511 module is of poor quality. What seems normal because there is dual analog-digital conversion. On PC, a digital audio source file (mp3 for example) is converted to analog by the "sound card" and then digitally by the Netgear software and analog XAUB2511 by the unit, resulting in poor audio quality. Way to remedy this: reduce the volume of the "sound card" to the maximum.