Datasheet

14 English
Logitech Wireless Combo MK520
Troubleshooting
Keyboard and mouse are not working
Check the USB connection. Also, try changing USB ports.
Move closer? Try moving the Unifying receiver to a USB port closer
to the mouse and keyboard.
Check battery installation. Also check the battery power of each device.
(See Battery management for more information.)
On the mouse bottom, slide the On/Off switch right to turn on
the mouse. The Battery LED on the mouse top case should light green
for 10 seconds. (See Battery management for more information.)
Mouse bottom
On/Off
switch