This Skype optical mouse with a 2-port hub is great little gadget for a notebook. The mouse has a built in MIC input function and allows you to use Skype in your notebook more freely. You will no longer need to add another earphone in your notebook as you can use this mouse to speak with your friends freely. The MIC input port is located at the top of the mouse. There is also a two USB hub on the retractable USB cable which can solve the problem of being short of USB ports. The compact mini design is very convenient for you to take around with you especially if you find it difficult using the finger pads provided on notebooks. The mini mouse works the same as a full size optical mouse it has scrolling wheel and right and left click buttons. This multi-function mouse is a great accessory for any notepad or computer.