Down to the last thought.

I work for a week with this unit, am extremely pleased. I had the predecessor A700 still problems with the keyboard, had to buy a USB keyboard instead of Bluethoot. Is there no problems, change the batteries is achieved in the mouse and keyboard perfectly (with push button). The speed of the computer is impressive. What I would like to mention, I had now asked for commissioning the old A700 by Lenovo Rescue System on operational delivery back, set up that has no problems worked perfectly. Have both now connected as HomeGroup, works just fine.
Addendum: 19.12.2014
Unfortunately, this only applies within the warranty period (1 year), after 1 1/2 years of daily use has stopped working the keyboard, including mouse, audio contact with the support of buying a new keyboard is recommended.