I connected a Trust Ximo Wireless Keyboard with Mouse (# 21132) via USB.
- The keyboard constantly "swallows" key presses. 
 In particular after a short or long period of non-use the wireless connection is disrupted. It is then difficult to "get the keyboard to write" again.
- This happens even with <1 m distance to the receiver, and in several different applications and text input situations (for example, password entry) 
- Batteries have already been replaced several times. 
- The receiver was operated as a test on the different USB interfaces available (USB 2, USB 3.0) 
- The USB charging function was also switched off as a test when the notebook is switched off to prevent the batteries from discharging quickly.
Does somebody has any idea?