The unit arrived on time and was easily installed on MacOSX 10.8.5 LAN. The printer has been identified in the LAN from the PC (WINXPPROF & Win7prof) For the price, the printing result was very good; Volume and speed perfectly fine. Even printing via Wi-Fi from the iPhone, iPad and Samsung Galaxy out worked flawlessly with the appropriate app. Then the device was in standby mode and was then no longer detected and / or aroused (the display shown after manual Awaken by pressing the On / Off button the status "ready"). Off, then on again ... nothing helped - funnily enough, the device was also not detected after uninstallation and reinstallation attempted - from any device and also not pinged with IP (printer display shows "ready"). Only a local connection to a computer via USB let the device working again; it printed normally again - this time just by this one machine addressed - until then switched to standby mode from which it was to wake up only manually again and after it was no more than "online" recognized by the computer.
Wrapped; returned. Pity about the four hours burned time.