Pairing a box is the process by which you take a virtual box and join it to a real life box, hence 'pairing'.
To pair a box, first you must connect a physical box to the network
Physical boxes can only be paired if a free, compatible virtual box already exists in Devices
Select the box you want to pair in devices
Under the Connection tab, the 'Pair with device' button should be available to click (will show as blue
Clicking this will show you all the available boxes that this virtual box can be paired to (e.g if it is an RFID Master, only RFID Masters will be available in the list)
Select the desired serial number - these are shown on the left of every box & click the 'Pair' button in the top right (or cancel if you do not want to pair)
The box will pair to COGS software
To un-pair the box, click the 'Unpair the device' button
Watch the Connecting Hardware to a Local Area Network tutorial here for more information.