1. We have many broken ADSL2MUE with the same simptom The POWER LED was RED all time when power on, and we can't connect to device. I have searched in Internet and found this problem is very common with ADSL2MUE, but haven't found a solution to fix it yet ! Please advise 2. The second problem with ADSL2MUE is that this device is not compatible with many ADSL services in our country. With some DSLAM the Device was able to sync ADSL signal, but unable to authenticate With some DSLAM the device totatlly unable to syn ADSL Signal With some DSLAM the device was unable to work if power Adapter was 5V and 1A power and only able to work I change the Power Adapter to 5V and 2A. But still they are not working stable !