Hello. I have a laptop and want to connect with other two screens, and a second mouse. what accessories I need;

Hello,

Thanks for contacting Plugable!

The Plugable UD-3900 is our most popular dual display dock with USB and Ethernet connectivity.

More info: http://plugable.com/products/ud-3900

You will need to provide your own monitor cables.

Thanks,
Jordan
Plugable Technologies