for Logitech Unifying USB Wireless Receiver Dongle Connect Up to Six Devices for Mouse and keyboard M510 M705 M600 M525 M345 K23 K270

"Only work with Logitech products that with unifying logo
Compatible with the following models:
Anywhere Mouse MX (M905)
Performance Mouse MX(M950)
Wireless Mouse M505,M510,M525,M305,M310,M315,M325,M345,M705,M215,M185
Couch Mouse M515
Touch Mouse M600
Marathon Mouse M705
for Logitech keyboard K23,K250,K270,K320,K340,K350
for Logitech Wireless Solar Keyboard K750,K800
for Logitech Wireless Desktop MK710,MK605
for Logitech Wireless Wave Combo MK550
Wireless Combo MK520
for Logitech Number Pad N305
for Logitech Wireless Trackball M570
MK330,MK270,MK220 etc.
for wireless mouse：M185、M215(not for old version)、M235、M305(not for old version)、M310(not for old
version)、M325、M505、M515、M525、M705、M905、M950、M345、M570、M600、m210
wireless keyboard：K230、K270、K320、K340、K350、K750、K800、N305、k260。

wireless keyboard and mouse：MK270、MK330、MK520、MK710、MK605、mk365、mk240 For more compatible products,please visit http://www.logitech.com/en-us/349/6126?debug=0&pcid=6072
ATTENTION:
* there is no Retail package.
*You can contact 6 different for logitech unifying device in the same time.
Download Unifying driver and software here
http://www.logitech.com/index.cfm/494/6254&hub=1&cl=us,en?section=downloads&WT.ac=os|6127||unifying_download